The Manchester derby enters a new era Saturday, when Pep Guardiola and Jose Mourinho are set to oppose each other for the first time as Premier League foes.Manchester City and Manchester United, the two biggest spenders during the summer 2016 transfer window, each enter Saturdays showdown having won their first three matches of the season.The managers have built up plenty of friction over the course of 16 head-to-head meetings since 2009, most notably in the El Clasico rivalry with Barcelona and Real Madrid, adding another layer of intrigue to the matchup. So as Guardiola and City prepare to take the pitch against Mourinho and United in a clash between unbeaten sides, we revisit some of the fiercest pro and college coach/manager rivalries in sports history.Pep Guardiola vs. Jose MourinhoAs two of the top coaches in the sport, Guardiola and Mourinho have been chasing the same trophies for the better part of a decade. Mourinho, the animated Portuguese manager of United, and Guardiola, the stoic Spanish manager at City, now find themselves separated by a mere 7 kilometers after leading several of the most powerful clubs in Europe.They matched wits for the first time in the 2009-10 Champions League, with Guardiola at the helm of Barcelona and Mourinho managing Inter Milan. Mourinho got the better end of things, with Inter earning two victories and a draw in four matches. A loss to Barca in the second leg of the semifinals was irrelevant, as Inter won on aggregate.When Mourinho took charge at Real Madrid in 2010, it placed him squarely in the path of Guardiola. Barcelona won the first La Liga matchup with a 5-0 rout. Barca and Real then squared off four times over the course of 18 days in April and May 2011. They began with a 1-1 draw in a La Liga match. Real and Mourinho followed with a 1-0 victory in the Copa del Rey final. Barca and Guardiola bounced back with a 2-0 victory and 1-1 draw to advance in the Champions League semifinals, later defeating Manchester United in the final.In six subsequent Barca-Real matchups, Guardiola won three times, earned two draws and lost once. (ESPN FC revisited the El Clasico animosity between Mourinho and Guardiola in this article.)Most recently, Guardiola and Bayern Munich won the final of the 2013 UEFA Super Cup on penalty kicks over Mourinhos Chelsea side. In total, Guardiola has defeated Mourinho seven times, Mourinho has won three matches, and there have been six draws.Sir Alex Ferguson vs. Arsene WengerMany managers challenged Ferguson during his 27-year reign at Manchester United, but Wenger clearly stands as his chief nemesis.Fergusons accomplishments are the stuff of legend: 13 Premier League titles, five FA Cups, two Champions League trophies and the magical 1999 treble season. After arriving with Arsenal in 1996, Wenger quickly established his Gunners as the primary challengers to Fergusons side. Wenger has won three Premier League titles and six FA Cups -- although two of them have come since Fergusons retirement in 2013.To say Ferguson and Wenger didnt care for each other would be putting it mildly, although the relationship began to thaw in later years. In total, these adversaries collided 49 times in 17 seasons. Ferguson won 22 times, Wenger won 15 times, and there were 12 draws. Ferguson praised Wenger earlier this year -- something once unimaginable -- for his consistency and refusal to yield to critics.Highlights of the rivalry include Arsenals 1-0 win in March 1998 that essentially won the Premier League title in Wengers first full season and Uniteds 2-0 win in October 2004 that ended Arsenals 49-match league unbeaten streak. The series was rudely punctuated by Uniteds 8-2 win in August 2011, arguably Wengers lowest moment at the Gunners helm.Incidentally, Ferguson matched up 16 times against Mourinhos challengers from Real Madrid, Inter Milan, Chelsea and Porto and wound up on the wrong side of the results. Ferguson won just four of those matches and earned five draws, with Mourinho winning seven times.Brian Clough vs. Don RevieThese two English football coaching titans shared a number of similarities in their backgrounds. Both grew up in Middlesbrough, though only Clough is memorialized there. Both managed Leeds United -- Revie memorably, Clough forgettably. Both badly wanted to manage the English national team; Revie got the job in 1974, but Clough never did despite being a candidate several times. Both won multiple league championships.They also shared a healthy contempt for each other, which boiled over in a cantankerous 1974 television appearance. After leading Leeds to the first division crown for a second time in 1973-74, Revie took over the English national team. Despite having criticized Revie and his players as cheaters, Clough got the job to replace him at Leeds. Clough was unable to replicate the success he had in leading Derby County to the first division title in 1971-72, and he was sacked just 44 days after arriving at Leeds -- an episode that later inspired a book and movie, The Damned United.Revie went on to coach the United Arab Emirates national team, while Clough landed at Nottingham Forest and went on to win the 1977-78 first division title and back-to-back European Cups in 1979 and 1980.Bill Belichick vs. Rex RyanA case can be made here for Belichick vs. Tom Coughlin. The two served as assistants together under Bill Parcells, and Coughlins New York Giants went 3-2 against Belichicks New England Patriots, including victories in Super Bowls XLII and XLVI.But Belichick and Ryan have jousted more frequently and more colorfully, and they maintain an active rivalry in the AFC East Division. While Belichick has been impassive in New England, Ryan has been just as entertaining with the New York Jets and Buffalo Bills. Belichick runs his program in secretive fashion and offers as little information as possible to the media. Ryan embraces the spotlight in a whirlwind of braggadocio, having introduced fans to a carnival of Super Bowl guarantees, Rexican food, the Sanchize, foot fetishes and one unforgettable Butt Fumble.Belichick holds an 11-4 advantage over Ryan but has been challenged over the years by Ryans defensive schemes. Belichick won both meetings last year in Ryans first season with Buffalo.Ryan won the only playoff matchup between the two: a 28-21 victory at New England in January 2011 that avenged a 45-3 loss during the regular season. Round 16 is scheduled for Oct. 2 in New England, and Round 17 is on the docket for Oct. 30 at Buffalo.George Halas vs. Curly LambeauNearly 100 years ago, these two titans of American football kicked off the oldest rivalry in NFL history. Lambeau helped found the Green Bay Packers in 1919. The Green Bay native played for the team from 1919-29 and served as both its head coach and general manager from 1919-49. Halas founded the Decatur Staleys in 1920. The Chicago native moved the team to his hometown the following season, and the franchise became known as the Chicago Bears in 1922. He played for the franchise from 1920-28, coached it for 40 seasons, served as its longtime general manager and owned the team until his death in 1982.During the formative years of the Bears-Packers rivalry, Halas and Lambeau became fierce rivals but respected each other greatly. They faced each other 41 times, and Halas held a 28-14-3 advantage. They met four more times after Lambeau moved on from Green Bay, first to the Chicago Cardinals and then to Washington. They went 2-2 in those games. Both men were part of the inaugural Pro Football Hall of Fame class in 1963. Halas served as a pallbearer at Lambeaus funeral in 1965.Pete Carroll vs. Jim HarbaughCarroll and Harbaugh got chippy when they locked horns as Pac-10 foes, and things escalated quickly when they graduated to the NFL.Their first meeting was a classic, with Harbaugh guiding 41-point underdog Stanford to a stunning road win over Carroll and No. 2 Southern California in 2007. Carroll and the Trojans got revenge with a 45-23 win in Palo Alto the next year. The rubber match in 2009 went to Harbaugh, when the Cardinal won 55-21, to hand USC its worst defeat in more than 40 years.Carroll moved on to the Seattle Seahawks in 2011, and Harbaugh joined him in the NFC West as coach of the San Francisco 49ers the next year. They went 4-4 head to head during the regular season over the next four years, but Carroll captured the ultimate tiebreaker by winning the 2013 NFC Championship Game -- a result that left Seahawks cornerback Richard Sherman, who played under Harbaugh at Stanford, famously chirping into television cameras.This rivalry went on hiatus when Harbaugh returned to coach his alma mater, Michigan, in 2015. But it wouldnt surprise us to one day see Harbaugh return to the NFL -- or for Carroll to become head coach at Ohio State. Stay tuned.Phil Jackson vs. Pat RileyThe most bruising defense in NBA history was on display in the 1990s, and these two legendary coaches and their teams memorably battled five times in the Eastern Conference playoffs.Riley piloted the high-flying Los Angeles Lakers to five NBA championships in the 1980s, but as head coach of the New York Knicks, he used players such as Patrick Ewing and Charles Oakley to focus on ferocious defense. Jackson and the Chicago Bulls, meantime, were building a dynasty on the shoulders of Michael Jordan and Scottie Pippen. Though the Bulls were known for Jordans aerial heroics, they learned how to absorb punches and give them right back -- having slugged it out in previous playoff series with the ruthless Detroit Pistons.Jacksons Bulls were the irresistible force. Rileys Knicks were the immovable object. They squared off in three consecutive postseasons from 1992-94, and both ranked among the NBAs top three in scoring defense each of those years.The Knicks pushed Chicago to seven games in the 1992 conference semifinals and six games in the 1993 conference finals. The Bulls won the NBA Finals both years. New York finally broke through to beat the Bulls in the 1994 conference semifinals in seven games, while Jordan was on sabbatical playing minor league baseball. The Knicks ultimately lost to the Houston Rockets in the NBA Finals.After Riley moved on to coach the Miami Heat, the coaches again butted heads in the 1996 and 1997 postseasons. But even with the stout Alonzo Mourning, the Heat didnt brawl quite like Rileys Knicks. The Bulls earned a three-game sweep in the first round in 96 and beat Miami in five games in the 97 conference finals. Chicago went on to win the NBA Finals both years and again in 1998.Geno Auriemma vs. Pat SummittConnecticut and Tennessee stand head and shoulders atop the history of womens college basketball, so its no wonder that the rivalry between the programs and their coaches was intense over the course of 22 matchups from 1995-2007.Auriemmas Huskies went 13-9 in those games, including 4-0 in national championship games. Summitt and the Lady Vols won the last three meetings before ending the series in 2007. UConn won five national titles during those 13 seasons, and Tennessee captured four.Summitt never publicly discussed why she ended the series with UConn. Auriemma said Summitt accused him of breaking recruiting rules but firmly denied any wrongdoing. The schools havent crossed paths in womens basketball since.So which program has the more storied legacy? You cant go wrong either way.Summitt, who died in July, ranks No. 1 in college basketball history with 1,098 wins as a head coach. Auriemma has 955 and counting. Summitt won eight national championships. Auriemma has 11 and counting. A statistical comparison by our colleagues at FiveThirtyEight.com gives the edge to Summitt and Tennessee. Regardless, the UConn-Tennessee rivalry undoubtedly fueled the emergence of womens basketball.Urban Meyer vs. Nick SabanAmong the many great rivalries in college football, this matchup stands out among active coaches. It carried national championship implications when Sabans Alabama Crimson Tide battled Meyers Florida Gators in the mighty Southeastern Conference -- and the stakes remain just as high after Meyers relocation to Ohio State and the Big Ten.Meyer and Saban are 2-2 in four career matchups:Dec. 6, 2008 -- Florida 31, Alabama 20: Tim Tebow threw three touchdown passes as the No. 2 Gators toppled the No. 1 Tide in the SEC Championship Game. Florida went on to defeat Oklahoma for the national title.Dec. 5, 2009 -- Alabama 32, Florida 13: Mark Ingram rushed for 113 yards and three touchdowns in the SEC Championship Game as the No. 2 Tide upset the No. 1 Gators. Alabama subsequently beat Texas for the national title.Oct. 2, 2010 -- Alabama 31, Florida 6: Ingram ran for two touchdowns, and the No. 1 Tide rolled up 170 rushing yards to dominate the No. 7 Gators in a regular-season game.Jan. 1, 2015 -- Ohio State 42, Alabama 35: Ezekiel Elliott ran for 230 yards and two touchdowns, and Cardale Jones threw for 243 yards in just his second career start as the No. 4 Buckeyes ousted the No. 1 Tide in the semifinals of the inaugural College Football Playoff. Ohio State then defeated Oregon for the national championship.One week into the 2016 season, Alabama is again ranked No. 1 and Ohio State is No. 4. Would anyone be surprised to see Meyer and Saban collide again in the College Football Playoff?Woody Hayes vs. Bo SchembechlerOhio State vs. Michigan is arguably the greatest rivalry in college football. The zenith of its conflict was the Ten Year War, when Hayes and Schembechler prowled the sidelines in opposition from 1969-78.Schembechler was hired by Michigan on a handshake deal on Dec. 27, 1968, replacing Bump Elliott, who resigned after the Buckeyes humbled the Wolverines 50-14 in the regular-season finale.In Schembechlers first season in Ann Arbor, he led the Wolverines to a memorable 24-12 upset of No. 1 Ohio State. The teams split the next two meetings, and the Buckeyes went 3-0-1 under Hayes in the series from 1972-75. Schembechler won the final three head-to-head matchups by a combined score of 50-9, giving him a 5-4-1 final series edge over his mentor.Although the Buckeyes and Wolverines are longtime archrivals, the two fiery coaches were close friends. Schembechler played offensive tackle for Hayes at Miami (Ohio) and was an assistant coach under him at Ohio State. The Hayes-Schembechler rivalry ended abruptly when Hayes was fired on Dec. 30, 1978 -- the fallout of his punching an opposing player in the previous nights loss to Clemson in the Gator Bowl.ESPN UK editor Steven Saunders contributed to this article. Edinson Volquez Jersey . Anthony Calvillo, through 20 CFL seasons, was frequently invincible and largely stoic in the heat of competition. But underneath the professional exterior he was, and is, compellingly human. Ronald Guzman Rangers Jersey . The Vikings announced Thursday that Priefer will be one of seven holdovers from the previous staff, along with offensive line coach Jeff Davidson, wide receivers coach George Stewart and others. Norv Turner will mark his 30th year of coaching in the NFL as the offensive co-ordinator, as widely reported for weeks, and George Edwards will be the defensive co-ordinator. http://www.texasrangersshop.com/rangers-lance-lynn-jersey/ . -- Eastern Kentucky thrives off creating havoc for others. Danny Santana Rangers Jersey . -- The Bishops Gaiters are showing they belong among the countrys top varsity football teams. Ferguson Jenkins Rangers Jersey . -- On the field, it was business as usual for Jameis Winston and No. When they were students golfing and living together at the University of Washington, Joel Dahmen and Nick Taylor would sit in their house and play Nintendos Mario Kart. Pretty often.Too often would be the best remark, Taylor said. When we first got it, we started playing NFL Blitz, then we went to Mario Kart. Essentially, we got addicted and there were three or four of us in the house playing all the time. We played too much but got pretty good. We kept playing and playing. It was in the winter, so there was more Mario Kart than golf.Now, they will be playing together again, but it wont be Mario Kart (or at least not on the course). It will be on the PGA Tour. Taylor has been on the tour since 2014, while Dahmen just earned his card at the end of August. He did so after years of considerable struggle.Dahmen, 28, got started in golf about the time he could walk, joining his father, Ed, who coached him throughout his junior career and helped him become very good. Unfortunately, Joels mother, Jolyn, died from pancreatic cancer when he was in high school. After receiving his scholarship to play at Washington, Dahmen wound up dropping out due to poor academics. While he partied a bit, he said he simply didnt go to classes enough during a difficult period.It was a tough time in my life, Dahmen said. My mom passed away. I was just a young kid without a lot of direction or drive to do anything at the time. Being a young kid from a small town [Clarkston, Washington] and all of a sudden at a large university with the world at my hands, I didnt handle it that well.Things got worse as there was more to handle. His brother was diagnosed with testicular cancer in 2009 and successfully treated. Then in 2011, Dahmen got the same diagnosis. He had surgery to remove a testicle and then underwent chemotherapy treatment that would go on roughly eight hours a day, every day, for several weeks in which Dahmen would be weak and prone to throwing up.At the beginning, its really tough, Dahmen said. Youre not really sure where to go or what to do or how healthy youre going to be or what your long-term goal can be. Its sitting down for a few weeks and pouting and saying, Why me? and Why is this happening to us? Then you have to make short-term goals and decide if youre going to fight it or not and how hard you will fight to get back on your feet.Dahmen fought hard enough to not only get back on his feet but resume playing golf within a month of his treatment. And he also played well enough to get on the Canadian tour in 2013.It renewed my respect and outlook on the game and changed my goals, he said of his return. My practice habits and some of the other things werent on track with the PGA professionals. I just kind of dedicated myself back to the game and practicing more. And got instruction. I realized thats what I wanted to do, and I really started working toward that goal.Reaching that goal wasnt easy, especially with financial obstacles that are far more numerous and challenging than sand traps on a golf course.While top golfers on the PGA Tour earn a lot of money -- more than 100 won at least $1 million in the recently completed season -- players on the lower levels do not. They must cover their own travel and lodging eexpenses, which easily can surpass earnings on the Canadian or Web.ddddddddddddom tours.Its hard to explain to people sometimes, Taylor said. The majority of athletes in every other sport, they might be paid less than what golfers make but all their expenses are taken care of, so they dont have to worry about that. If a golfer makes 50 grand in a year, hes at least spending that amount for traveling and caddies.Dahmen said his father was always supportive, Making sacrifices to give me all the opportunities he could to make my dream a reality. He also had another loyal supporter backing him in Bob Yosaitis. The former owner of Bradley Pacific Aviation, Yosaitis played a crucial role with financial and other support.The two met and became friends while Yosaitis was caddying for his son at the 2010 Washington state amateur tournament. In the years since, Yosaitis has provided considerable financial help, including paying for Dahmens cancer treatment. He has even caddied for him.I was looking at Joel like another one of my kids, Yosaitis said. He called me one day on the phone and was crying. I thought he had some golf problems. I asked, Whats wrong? and he said, I have cancer. I told him, Dont worry. Ill pay for the treatment. Youre getting the surgery.Dahmen said Yosaitis has been like a second father to him.Hes just a super generous guy who can help and was willing to help, Dahmen said. And weve had a great incredible relationship ever since.Still, it took several years on the Canadian and the Web.com tours before Dahmen finally earned his PGA card in late August. Even that barely happened. Just prior to qualifying, he missed the cut at three consecutive tournaments and nearly missed out. He cried when he missed the cut in the last tournament, and then cried again when he earned the card after finishing among the top 25 on the Web.com tour.Dahmen said if he hadnt qualified he would have felt like he let down all the people who helped him, including his father and Yosaitis.Im just way more appreciative of the experiences and things I get to do, he said. I enjoy everything Im doing a lot more. Im trying to really enjoy the moment that Im in and the people Im with and not take anything for granted. I used to take everything for granted because I pretty much had everything I needed. It just humbled me quite a bit and brought me back to earth.The challenges and difficulties never end, of course. Eight days after earning his card, Dahmen slipped on a cart route and injured his hand with a break at the base of his thumb. Hes targeting the Sanderson Farms Championship at the end October for his debut as a PGA Tour member. Perhaps he and his old housemate Taylor will then reunite, playing Mario Kart in between tournaments and setting an example for aspiring young golfers for how to succeed in the sport.Theres more than one lesson to learn, Taylor, 28, said. Not giving up is the most evident one. I think a lot of people in that scenario could have hung up the clubs and done something else, because being pro wasnt the likely reality, but people who know Joel know how good he can be. ' ' '