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

Name: Chris Gragg

Position: Tight end

Age: 25

2014 stats: 10 games (five starts), seven catches (48 yards, one touchdown)

Chance of making 53-man roster: 45 percent

Why he should make it: Gragg was a seventh-round pick in 2013 and has yet to stand out in a way that would suggest he can hold down the No. 2 tight end spot behind Charles Clay. Still, that doesn't mean he will lose his roster spot entirely. The Bills have five players (Gragg, MarQueis Gray, Nick O'Leary, Matthew Mulligan and Clay Burton) competing for playing time behind Clay, and realistically they could keep three of those five players on their 53-man roster. That gives Gragg, who ran a 4.50-second 40-yard dash at the combine two years ago, a shot to make the roster and potentially contribute as a No. 3 or No. 4 option. Outside of Clay, the entire position is up in the air entering training camp.

Why he shouldn't make it: The problem for Gragg is that he hasn't translated his athletic ability, especially his straight-line speed, into results at the NFL level. He doesn't stand out as a blocker or as a receiver, so when the Bills construct their 53-man roster at the end of training camp, why should they devote a spot to Gragg? In truth, O'Leary and Gray are both better receivers, Mulligan is a better blocker, and Burton is a younger prospect with good size and some potential as a receiver. The Bills have already given Gragg two seasons to emerge in a relatively weak tight end depth chart and he hasn't seized the opportunity. Third chances aren't often given in the NFL.

Closest competition: Mulligan, Gray, Burton