ORCHARD PARK, N.Y. -- Buffalo Bills offensive tackle Seantrel Henderson is facing a four-game NFL suspension for violating the leagues substance-abuse policy, a source told ESPN NFL Insider Adam Schefter.The positive test was apparently caused by a treatment for Crohns disease and the suspension is under appeal, a source told Schefter. While some reports have indicated marijuana was the cause of the positive test, sources tell ESPN marijuana is only part of the equation.Bills coach Rex Ryan wouldnt comment on specifics of the suspension, but he said the team would fill the void.Well be prepared for whatever happens, obviously, he said. For us, any time, with any situation, our board is set up to where you got the top free agents available -- whatever the situation is, through injury or whatever -- our pro personnel department is on top of it.Henderson, 24, tested positive for marijuana at the NFL combine in 2014, a source told Schefter. He also was suspended while playing at the University of Miami for failed drug tests. Hendersons history with substance abuse caused some teams to remove him from their draft boards.Ryan said the Bills have a program in place to steer players clear of danger.Well I think, first off, were not perfect by any stretch of the imagination, but we try to provide our players with -- I think our player program department, we bring in speakers, we try to have, even through the league theres things set up, he said. But unfortunately weve had some issues.The Bills selected Henderson with their seventh-round pick in 2014. He started all 16 games at right tackle as a rookie and started 10 of the Bills first 11 games last season, missing one game in October with a concussion.Henderson missed the final five games of last season after he was diagnosed with Crohns disease, an inflammatory condition that affects the digestive system.The third-year tackle told The Palm Beach Post last month that he underwent surgery in January to remove 2? feet of his intestines, resulting in him losing nearly 50 pounds and having to wear an ileostomy bag until his intestines were reattached in April.I was weak, Henderson told the newspaper. At first I couldnt stand up on my own. I felt so weak. It was terrible. I didnt like it at all. I kept walking and walking around the hospital.Hendersons weight dropped to 281 following the surgery, but he regained most of his lost weight by the time he returned to practice Aug. 22. He is now on a strict diet that prevents him from eating gluten or certain vegetables.Jordan Mills replaced Henderson in the starting lineup late last season and remains the Bills projected starter this season. Henderson has mostly taken snaps with the second team since returning to practice.Hendersons suspension is the teams third substance-abuse suspension since the summer. Former running back Karlos Williams was suspended four games in July and later released, while Pro Bowl defensive tackle Marcell Dareus will miss the first four games of this season for what he called a missed drug test. Rod Woodson Jersey . The 27-year-old Scrivens will be joining his third NHL club since signing with the Toronto Maple Leafs as a free agent in 2010. The move also reunites with him with head coach Dallas Eakins from their time together with the American Hockey Leagues Toronto Marlies. Fred Warner Jersey . Pirlo limped out of Sundays 1-0 win over Udinese after just 13 minutes. 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Western Bulldogs coach Luke Beveridge marvels at how far his side has come.The group that threatened to fall apart in 2014, when captain Ryan Griffen and coach Brendan McCartney walked out the door, adopted a team-first mentality under Beveridge that has carried them all the way to their first AFL grand final in 55 years.Midfielder Caleb Daniel described the side as 22 players who would run through a brick wall if asked, and it showed in the Bulldogs finals wins over last years grand finalists - West Coast and Hawthorn - and young powerhouse Greater Western Sydney.Plenty of the credit will go to Beveridge, who was on Tuesday evening named by his peers as coach of the season for a second consecutive year.But the former Hawthorn assistant says it has taken something remarkable from his players to get to where they are.Once you teach a system, you can bring different personnel through that and they can adapt and they can roll with the punches, he said at the AFL Coaches Association awards.You can take them all the way if theyre willing to learn (but) theyy have to buy in.ddddddddddddThat was the rare thing.Im thanking everyone whos supported my role but the most important people at the football club are the players and what theyve been able to do, for a pretty young group ... theyve saved some of their absolute best for now.For Bulldogs fans old enough to remember the teams only flag won back in 1954 - and those who have dreamed of themselves witnessing a grand final win - Saturdays grand final against Sydney couldnt be a bigger occasion.But Beveridge is not planning any grand speeches to motivate his troops before they run out onto the MCG.This group have provided their own source of inspiration for a period of time now, he said.Therell be some messaging around different things but its important that we dont go too obscure.There wont be anything that makes them think what the hell are you talking about or Bevo is actually anxious and has half-lost it. Well be pretty level. ' ' '