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First-String WR: Stevie Johnson
Johnson remains the unquestioned top receiver for the new-look unit, but he is starting over in the chemistry department with a slew of new quarterbacks on the roster. Timing will be an issue that needs to get sorted out as the summer progresses, but Johnson adjusted to Ryan Fitzpatrick's limitations so there should be no new issues with him moving forward.
Second-String WR: Robert Woods
The rookie earned high praise leading up to the draft as being one of the most NFL-ready receivers in his draft class. Woods has showed a knack for getting open during his short time with the team and looks to be transitioning smoothly to the pro game. Either Woods or Johnson could spend much of their time in the slot working in the middle of the field, while one of the burners split outside.
Third-String WR: TJ Graham
Now in his second season, Graham has a lot to prove after a forgettable rookie season. According to BuffaloBills.com beat reporter Chris Brown, however, he was the best wide receiver during OTAs. Graham likely stays on the outside, while Marquise Goodwin rotates in with him.
Fourth-String WR: Da'Rick Rogers
This may be a little high for Rogers, but his talent alone may make it difficult to leave him off of the field. Rogers was off-and-on during OTAs, but he repeatedly hit big plays with EJ Manuel during the first week of practice. If that chemistry translates to mini-camp and then training camp, Rogers could go from undrafted to major contributor in a few months.
Fifth-String WR: Marquise Goodwin
Goodwin and Graham are interchangeable as track stars on the outside, but Goodwin might need a little more time in an NFL program before he is able to contribute. Graham was extremely raw last year in limited opportunities and Goodwin could get the same treatment despite being a third-round pick.
Sixth-String WR: Chris Hogan
Hogan was a last-minute signing at the end of last season off of the Dolphins practice squad. Hogan was the receiver who lit-up Miami's camp during HBO's Hard Knocks last summer and finds himself in a good position to stick with Buffalo in some capacity. Brad Smith and Marcus Easley are likely number casualties although their special teams' usefulness could help them make the team. Brandon Kaufman is another young player who could slide in here, but might be better served as a practice squad stash.