A.J. Tarpley

Bills linebacker A.J. Tarpley retires due to concussions

Buffalo Bills linebacker A.J. Tarpley announced his retirement from the NFL.

What It Means:

Tarpley, 23, retired specifically due to concussions. which he explained on Instagram. "I suffered the 3rd and 4th concussions of my career this past season and I am walking away from the game I love to preserve my future health," he wrote. "This decision is the hardest I've made yet but after much research and contemplation I believe it's what is best for me going forward."

Tarpley earned playing time in 14 games as an undrafted rookie last season and had a legitimate chance at significant snaps in a weak Bills' linebacker corps. Buffalo finished a disappointing 16th in Adjusted Defensive Net Expected Points per play in 2015.