(Continuing a month-long series analyzing players who are on the roster bubble and where they may potentially fit in 2014.)
Name: Chris Hairston
Position: Offensive lineman
2013 stats: None; spent entire season on Non-Football Illness list.
Chance of making 53-man roster: 50 percent
Why he should make it: Hairston is one of the more intriguing names on the roster. He missed all of last season, so we never got a feel for how he was viewed by Doug Marrone, who has a keen eye for offensive linemen. After starting out on the second team early in organized team activities, Hairston received more time with the top unit by minicamp this week. At the moment, he should be in the discussion to start at right guard or right tackle. If he can take over one of those roles, then his roster spot is secure. Hairston could also be valuable as a backup swing guard or tackle.
Why he shouldn't make it: While Hairston has shown upside this spring, he faces competition from younger players on the roster. The Bills drafted three lineman in May -- Cyrus Kouandjio, Cyril Richardson, and Seantrel Henderson -- and if they keep all three on their 53-man roster, there may not be room for Hairston. If the Bills don't want to expose Richardson or Henderson to waivers then Hairston could be cut. It will be a numbers game.