ORCHARD PARK, N.Y. -- Bills running back LeSean McCoy did not finish practice Wednesday after experiencing tightness in one of his hamstrings.Coach Rex Ryan didnt know the severity of the injury by saying the teams top offensive threat was still being evaluated by trainers. Ryan also wouldnt speculate on McCoys playing status for Sunday, when Buffalo (4-2) travels to play at AFC East rival Miami (2-4).We feel good about the guys that we do have, but thats assuming he wont play, Ryan said, when asked how McCoys possible absence would affect the game plan. Well see how it goes.McCoy has played a key role in sparking Buffalos four-game winning streak -- the teams longest in eight years. Its a stretch in which hes combined for 470 yards rushing and six touchdowns, including one receiving.In a 45-16 win over San Francisco , McCoy had 19 carries for 140 yards three touchdowns in a game Buffalo totaled 312 yards rushing, the fifth-highest output in team history.McCoy is in his second season in Buffalo after the Bills acquired the NFLs 2013 rushing leader in a trade with Philadelphia. McCoys production was slowed last year, when he opened the season with a partially torn left hamstring. He then missed the final two games of the season because of a knee injury.Ryan didnt say which of McCoys hamstrings was being evaluated.Mike Gillislee is McCoys backup followed by veteran free-agent addition Reggie Bush and rookie fifth-round pick Jonathan Williams.The Bills offense could also be missing starting receiver Robert Woods, who aggravated an injury to his right foot against San Francisco. Woods was still wearing a protective boot on Wednesday.Starting tight end Charles Clay also didnt practice after he hurt his ankle on Sunday.Buffalo is already playing without top receiver, Sammy Watkins, who aggravated an injury to his surgically repaired left foot last month. Watkins was placed on injured reserve and is not eligible to be activated for four weeks.---AP NFL website: www.pro32.ap.org and AP NFL Twitter feed: https://twitter.com/AP-NFLMorten Andersen Jersey . Any real chance at payback wont come until the playoff. Still, Pittsburgh knows its taut 3-2 win over the Bruins on Wednesday night is a pretty good place to start laying the groundwork. "They are a very good defensive team," Penguins forward Brandon Sutter said. TreQuan Smith Jersey . Shot outdoors against the stunning backdrop of Banff, Alta., the networks 30-minute original production airs tonight at 8pm et/5pm pt on TSN2. The four All-Star teams will play for $100,000 in prize money during TSNs annual skins game, airing live this weekend on TSN from The Fenlands Banff Recreation Centre. http://www.customsaintsjersey.com/custom-jammal-brown-jersey-large-752e.html .Y. - New Orleans forward Anthony Davis was chosen Friday to replace the injured Kobe Bryant in the NBA All-Star game that will be played in his home city. Mitch Berger Jersey . 1, meaning problems for the doping controls at both major international sports events next year. The World Anti-Doping Agency provisionally suspended the Moscow Antidoping Center on Sunday, saying its operations must improve or a six-month ban on the facilitys accreditation will be imposed. Wholesale Custom Saints Shirts . 1 position. The Mustangs (6-0), who beat Queens 50-31 last weekend, earned 17 first-place votes and 287 points in voting by the Football Reporters of Canada. Western was last ranked first in the country in October 2011. MINNEAPOLIS -- Minnesota Vikings punt returner Marcus Sherels has been downgraded to out for the game against Jacksonville on Sunday.Sherels was initially designated as questionable on Friday with a rib injury. He has missed four games with injuries, taking one of the teams biggest special teams threats away. But the Vikings (6-6) announced on Saturday that Sherels would not be able to play in Jacksonville.Adam Thielen filled in for Sherels at punt returner against Dallas and had a costly fumble deep in their own territory that led to a Cowboys touchdown.ddddddddddddThe Vikings also said backup linebacker Edmond Robinson was downgraded to out after being listed as questionable.---For more NFL coverage: http://www.pro32.ap.org and http://twitter.com/AP-NFL ' ' '