The Buffalo Bills made a change to their roster after just one day of Organized Team Activities.
The team announced Wednesday that they have signed undrafted free agent wide receiver Derek Session. The wideout participated in the team's rookie mini-camp in May. Session is a 6-foot-1, 225-pound receiver that had 132 catches for 1,364 yards and five touchdowns in 48 total games for the Universtiy of Maine.
The Bills have also announced the release of offensive lineman Paul Madsen. Madsen was an undrafted free agent signing by the team following the 2012 NFL Draft.