ORCHARD PARK, N.Y. -- The Buffalo Bills have waived second-year running back Karlos Williams, the team announced Saturday.The NFL announced in July that Williams is suspended for the first four games of the regular season for a violation of the leagues substance-abuse policy. He can serve the suspension as a free agent if he is not claimed off waivers or signed by another team.Ive always said this is a performance-based business, Bills general manager Doug Whaley said Saturday. The release of Karlos Williams was strictly performance-based. He came in behind the eight ball and never caught up. And there was other guys on the roster that moved ahead of him.In light of that, we thought, Why hold on to him? Why dont we give him a chance to maybe find another job out there in the league? We werent going to hold on to him to the end, knowing he wasnt going to make the team.Williams, 23, began training camp on the active/non-football illness list after he reported to minicamp in June out of shape. His weight went as high as 261 pounds during the offseason, a league source told ESPNs Adam Schefter. Williams attributed his weight gain to his pregnant fiancées food cravings.Williams, whose listed weight on the Bills website was 230, was activated Monday from the non-football illness list and practiced this past week.Whaley was asked if Williams was having trouble losing weight.I think its a process, and he was so far out of reach for his goal, it was going to take a lot of time for him to get to where he needed to be, Whaley said. While youre taking time, other guys are moving past you.Williams took to Instagram to thank the Bills for his time in Buffalo.The Bills decision to release Williams represents a reversal of course from the team, which had supported him despite his poor conditioning and suspension.I think were all excited about the talent he has, coach Rex Ryan said Monday. Its clear this is a really talented young man and yeah, we hope that hes here for a long time and does the right things and handles himself well off the field. So thats something that were counting on from him.A fifth-round pick last season, Williams played in 11 games, starting three. He gained 517 yards on 93 carries and scored seven rushing touchdowns in addition to two receiving touchdowns.Williams tied an NFL record last season by scoring a touchdown in each of his first six games played in the league. New England Patriots running back Robert Edwards also scored touchdowns in his first six games as a rookie in 1998. 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Darya Domracheva of Belarus was second, 34. Matt Breida Super Bowl Jersey . LOUIS -- St. PARIS -- An alleged doping cover-up that enabled Russian medalists to compete at the 2012 London Olympics even had a codename: The Total protection project.The alleged scheme is detailed in an email seized by prosecutors in France. The email was dated July 30, 2014, and sent from an address used by Valentin Balakhnichev, then head of the Russian athletics federation. The Associated Press saw a copy of the email on Friday.The email alleges that officials at the IAAF, track and fields governing body, strong-armed Russian authorities into a doping cover-up involving Olympic and world champions. It alleged the total projection project allowed several Russian athletes to race in London and win medals, even though they were suspected of blood doping and should not have competed. The scheme continued into 2013, the email alleged.Then, it complained, IAAF officials went back on the deal by pursuing doping cases against six Russian athletes. The previous month, the IAAFs anti-doping department had informed Balakhnichev, in a separate email also seen by the AP, that it was pursuing suspected blood doping cases against five Russian race walkers and a runner.The July 30 response from Balakhnichevs email address warned of dire consequences and a huge black spot for the IAAF if Russian athletes were pursued and threatened to go public about the alleged cover-up.We will not remain silent. It was not us who started this game. It was the IAAF project and the IAAF shall be the key victim of future scandal, said the email.We have enough evidence to prove criminal activities of the IAAF people, it added.The IAAF president at the time was Lamine Diack, now under investigation in France on money laundering and corruption charges.French authorities found the email in a search of the Paris region home of Habib Cisse, a lawyer who was a legal adviser to Diack. Cisse is also under investigation by French magistrates, faciing a charge of receiving corrupt payments.dddddddddddd Cisse denies wrongdoing.In a statement posted Friday on his verified Facebook page, Balakhnichev said he did not write the email and that he believed the correspondence was falsified. Balakhnichev has been banned from track and field for life for his role in the extortion of Russian marathon runner Liliya Shobukhova.French newspaper Le Monde and German broadcaster ARD first reported on the email.Le Monde reported that another letter said to have been written by Balakhnichev in June 2014 alleged that IAAF representatives had invented the total protection moniker for the cover-up scheme.We think the only way to avoid an enormous scandal about the covering up of numerous anti-doping violations, implicating numerous IAAF officials, is to continue to keep the situation `under the table, as has been the case all these years, Le Monde quoted the letter as saying.The IAAF, now led by Sebastian Coe, said it could not comment in detail on the developments.It is clear we all need to get to the bottom of what has happened which is what the French criminal investigation is doing and we continue to assist them as required. We are taking bold steps to safeguard the sport in the future with the reforms we are introducing, an IAAF statement said.Le Monde reported that another note seized by French investigators alleged that one of Diacks sons, former IAAF marketing consultant Papa Massata Diack, had asked for between 300,000 euros ($318,000) and 700,000 euros ($743,000) to cover up cases involving five Russian athletes, aside from Shobukhova.Papa Massata Diack, who lives in Senegal, is wanted in France for questioning and is subject to an Interpol request for his arrest.---AP Sports Writer James Ellingworth in Moscow contributed. ' ' '