Schedules have a way of separating the elite teams in college football from the really good teams.Its not just who you play, its when you play them. Those teams with the most talent, depth and resilience are typically best equipped to navigate the toughest grinds, but when a team has to play three or four Top 25 teams in a row, it can take a toll.Who has the toughest four-game stretch in college football this season, the most daunting slate over four weeks without any byes -- the kind of stretch that can make or break a season? Weve ranked our top 10, and its worth noting that six of the toughest 10 (and three of the top four) belong to Pac-12 teams, including one lucky team that has two tough stretches on its schedule.Might want to keep these stretches in mind before making your last-minute prognostications.1. USCNov. 5, No. 24 Oregon Nov. 12, at No. 14 Washington Nov. 19, at No. 16 UCLA Nov. 26, No. 10 Notre DameIt was a tough choice between Stanford and USC for the top spot, but we went with the Trojans based on a couple of different factors. Their November consists of four nationally ranked opponents in the AP preseason poll, and after three rugged conference games, they close the season by having to step out of conference to host Notre Dame. Talk about not being able to catch your breath the last month of the season. The truth is USCs schedule is downright brutal, so much so that the Trojans have another four-game stretch to open the season (see below) that could have very easily made the top 5. That grind starts with No. 1 Alabama. Wholesale Nike Shoes UK Online . The Australian is competing in his final season in Formula One and still looking for his first win this year. He will look to end Vettels run of six straight race wins on Sunday. 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RIO DE JANEIRO -- After a 12-year professional boxing career, Hassan NDam dreamed of returning to the Olympics and winning the gold medal that eluded him in Athens.Instead, NDam is headed home with a bitter lesson in the amateur version of his sport.NDam was ousted in his opening bout in Rio de Janeiro on Saturday night, losing a unanimous decision to Brazils Michel Borges.The 32-year-old NDam, who held versions of two pro middleweight titles, is the biggest name among the three professional boxers who joined the Rio field earlier this summer. Although the French-Cameroonian veteran appeared to land cleaner shots in the final two rounds, Borges got the decision in his hometown with a quick start and the wild support of a crowd that roared for his every punch.Im very disappointed about this, NDam said. Hes a good fighter, but I think Im better than him. I took too much time to come into the fight, but I lost the fight.NDams stunning loss buried any fears of an Olympic tournament dominated by professionals in Rio.Lightweight Carmine Tommasone, who has never fought professionally outside of his native Italy, became the first pro boxer to win an Olympic fight in the morning session at Riocentro Pavilion 6, beating Mexicos Lindolfo Delgado.Thailand lightweight Amnat Ruenroeng, the third pro in the field, fights Sunday.When the International Boxing Association (AIBA) decided earlier this year to allow any boxer to attempt to qualify for the Olympics, many observers condemned the move, envisioning a bizarre event with elite prizefighters seriously hurting teenage amateurs.But every big-name boxer in the world passed on Rio, citing everything from injury worries to the Olympic-style sports peculiar demands in a multi-fight tournament featuring daily weigh-ins and three-round bouts.The last factor doomed NDam, who acknowledged feeling out his opponent in an inactive first round.In the pros, thats a smart strategy. In the amateur game, the fight is already one-thirdd over.ddddddddddddI did it too slow, NDam said. Im not happy. I came too far for this competition. I took too much time from my professional career. I have no regrets, but I took too long to get into the fight.NDam had hoped to better his performance in the loaded Olympic middleweight tournament in 2004, when the amateur game still used the now-discarded punch-counting system to determine winners. NDam beat future Irish world middleweight champion Andy Lee, but lost a decision to Russias Gaydarbek Gaydarbekov, who went on to beat Gennady Golovkin for the middleweight gold medal in Athens.Many boxing experts predicted wild mismatches when pros joined the Olympic qualification process this summer -- and perhaps it would have happened if the likes of Golovkin or Canelo Alvarez had signed up.But the amateur game presents challenges that can be just as problematic as a Wladimir Klitschko jab.Its very different, Tommasone said. I (had to adjust) for a three-round Olympic fight. I usually prepare for a 10-round, 12-round (fight). I had to win the match with intelligence.The 32-year-old Tommasone thoroughly controlled his first Olympic fight, trouncing the 21-year-old Delgado with activity and precision. Tommasone fights as a 126-pound professional featherweight, but chose the 132-pound lightweight division for the Olympics, likely making it easier to deal with daily weigh-ins.Tommasone, nicknamed Mr. Wolf after Harvey Keitels problem-solving character in Pulp Fiction, barely missed qualification for the Beijing Games. He eagerly seized the Italian federations invitation to qualify last month in Venezuela.The Olympics are a dream for every athlete, and for me, it is wonderful, Tommasone said. When I learned that I could qualify, I wanted to do it immediately. It was my dream.---Online:AP Summer Games website: http://summergames.ap.org/ ' ' '