Aaron Nola was expected to anchor the Philadelphia Phillies rotation this year, his first full season in the major leagues.Lately, however, Nola has come undone.He is 0-3 with a 15.23 ERA in his last four starts, pitching no more than 3 2/3 innings in any of them, and manager Pete Mackanin said Saturdays outing against the Kansas City Royals is very important for the confidence of the 23-year-old right-hander.Four (bad) starts in a row is not something we want to see, Mackanin said of Nola, the clubs first-round pick (seventh overall) in 2014. Its a matter of him getting back to where he was.More than anything else, Nola (5-7, 4.45 ERA) will be looking to improve his location when he opposes Royals left-hander Danny Duffy (3-1, 3.24).The more I think about it, and the more I look at the video, all his good starts, the ball was down at the knees, Mackanin said. All his bad starts, the balls elevated. Hes not keeping the ball down in the zone.Pitching coach Bob McClure has discussed that with Nola since his last start, a no-decision Sunday in San Francisco in which he allowed five runs and 10 hits over 3 1/3 innings. While Nola has done his usual bullpen work this week, he did not play catch, as is customary. The hope, Mackanin said, is that backing off just kind of cleared his mind a little bit.Nola, an LSU product, sped through the Phillies minor league chain. He made his major league debut on July 21, 2015, and finished last season 6-2 with a 3.59 ERA. He also logged 10 quality starts among his first 12 outings this season, giving Mackanin reason for optimism.Ill go out on a limb and say hes going to be special, Mackanin said in early June. I see no reason why he cant be an outstanding pitcher down the road. Hes pretty good right now.Duffy, meanwhile, made 16 appearances out of the bullpen before joining the Kansas City rotation in mid-May. Saturdays start will be his 10th of the season. He matched his career high of eight innings in a 6-2 victory over St. Louis on Monday.The only runs he allowed came on Matt Hollidays two-run homer in the first inning.I didnt really feel a need to settle down after that, Duffy told mlb.com. I thought I made a good pitch. Hes just so strong. You just tip your cap in that situation.Duffy wound up surrendering six hits while striking out eight. He didnt walk a batter.Its nice to go eight innings, he said, according to MLB.com. Any time you can save the bullpen its a good thing. Very gratifying.Duffy, who has never faced Philadelphia, finished June with 45 strikeouts in 36 innings -- the most by a Royals pitcher in a calendar month since Zack Greinke had 49 in August 2009.He will face a resurgent Philadelphia lineup. The Phillies hit .326 and scored 57 runs while going 5-4 on a road trip that wrapped up Wednesday, then had 12 hits in Fridays 4-3 victory. Cameron Rupp, who has hit safely in seven straight games, had three of them, while Odubel Herrera, Maikel Franco and Cesar Hernandez had two apiece.Peter Bourjos also singled to extend his hitting streak to 10 for Philadelphia, which has won four straight.Kansas Citys Alcides Escobar extended his hitting streak to 12 games, matching his career long, with a double Friday, and Kendrys Morales added a two-run homer. Morales, who batted at a .403 clip in June, has hit safely in seven straight games. He did, however, see his string of multi-hit games snapped at six. adidas ultra boost schuhe schweiz . How great will be revealed in the next couple of days at the board of governors meeting in Pebble Beach, Calif. ultra boost schweiz kaufen .S. 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Petr Petrov and Michael Perez will square off in a lightweight world title elimination bout on Sept. 30 in Indio, California, Golden Boy Promotions announced Friday.The Fantasy Springs Resort Casino fight, which will headline on Golden Boys Boxeo Estelar series on Estrella TV, will put the winner in position to become the mandatory challenger for 135-pound world title held by Anthony Crolla (31-4-3, 13 KOs), 29, of England, although he is scheduled to defend against former titleholder and Golden Boy fighter Jorge Linares (40-3, 27 KOs), 30, of Venezuela, on Sept. 24 in Manchester, England.Michael Perez has been a very exciting fighter to watch rise through the ranks in the lightweight division, one of the hottest weight classes in boxing right now, Golden Boy CEO Oscar De La Hoya said. We also know Petrov as an experienced and destructive fighter who wont go down without an all-out brawl.Petrov-Perez will replace the original headline fight, which was to involve featherweight Andrew Cancio. Golden Boy pulled him off the card this week for the opportunity to face 2012 U.S. Olympian and blue chip prospect Joseph Diaz on the Canelo Alvarez-Liam Smith HBO PPV undercard on Sept. 17 at AT&T Stadium in Arlington, Texas.The fight will be by the far the biggest so far for Perez (24-1-2, 11 KOs), 26, of Newark, New Jersey, who is unbeaten in 10 consecutive fights (9-0-1) since a sixth-round knockout loss in 2012 to Omar Figueroa Jr., who went on to win a lightweight world title.This is another step up in my career to becoming a world champion, Perez said. I am very excited for this fight and I feel very motivated. I have been waiting for a fight like this, to be challenged at such a high caliber keeps me focused and motivated. Petr is a touugh guy and that has been what has carried him to where he is today, but I am smart fighter and will be prepared to box when I want to and brawl when I want to.ddddddddddddThe skills I have and the plan we have to execute are what will determine the victory for this fight. Both Petr and I know whats at stake here: the winner of our fight will be the mandatory for the winner of the world championship unification fight between Jorge Linares and Anthony Crolla. I am ready for the challenge.The 33-year-old Petrov (37-4-2, 17 KOs), a native of Russia who fights out of Spain, received a junior welterweight world title shot in 2011 but was knocked out in the fourth round by Marcos Maidana, who retired last week.But since dropping a unanimous 12-round decision in 2013 to Dejan Zlaticanin, who won a vacant lightweight world title on June 11, Petrov has won five fights in a row. Three of those wins came en route to Petrovs winning the 2014 ESPN Boxcino lightweight tournament.Michael Perez is an experienced fighter, Petrov said. He is one of my tougher challenges, but I feel that my experience in being in bigger fights has me prepared.This is for the mandatory challenger in the WBA lightweight world championship and I know this will be a good fight. At the end of the day, it will be about who is prepared the best and may the best man win.Said Artie Pelullo of Banner Promotions, Petrovs promoter: This is a big opportunity for Petr, which is well deserved. He knows, with a win, he will become the mandatory challenger and we know that he is a championship-level fighter and we expect a great performance on Sept. 30. ' ' '