Continuing a month-long series analyzing players who are on the Buffalo Bills' roster bubble and where they potentially fit in 2015:

Name: Matt Cassel

Position: Quarterback

Age: 33

2014 stats: 3 games (3 starts), 41 completions (425 yards), 57.7 completion rate, 6.0 yards per attempt, 3 touchdowns, 4 interceptions, 65.8 QB rating (placed on injured reserve Sept. 24)

Chance of making 53-man roster: 60 percent

Matt Cassel is the Bills' most experienced quarterback but is not a lock to make the 53-man roster. Timothy T. Ludwig/USA TODAY Sports

Why he should make it: Cassel is by far the most experienced quarterback on the Bills' roster and still very much has a chance to win what will remain an open competition entering training camp. If he can clean up his accuracy and interception problems from OTAs and minicamp, the opportunity will be there for him to win the starting job. Neither EJ Manuel nor Tyrod Taylor were great during spring practices; they were simply better than Cassel. Any regression from Manuel or Taylor coupled with any progression from Cassel will put the veteran in a spot to win the competition in camp. Even if he doesn't, the Bills could try to negotiate a lower salary (he's currently due to make $4.15 in base salary) that would make it more palatable financially to keep him as the backup.

Why he shouldn't make it: Cassel was noticeably worse than Manuel and Taylor in the six practices open to reporters this spring. He was inaccurate, made poor decisions with the ball and was intercepted more than the other two quarterbacks. Cassel is several years removed from his career-best 2010 season with the Kansas City Chiefs, and at this point in his career he simply might not be a capable NFL starting quarterback. If his training camp and preseason performances show that to be true, the Bills have a financial decision to make with him. If they release Cassel before the start of the regular season, they would save $4.15 million, an amount the Bills could then carry over into 2016 to give them some much-needed cap relief. Several NFL teams (including the Bills last season) are opting for only two quarterbacks on their 53-man roster and, at the moment, Manuel and Taylor appear to be the best options for that scenario.

Closest competition: Any other bubble player, especially cheaper options.