1. On-Field Performance of National Football League Players After Return From Concussion. (September 2014) Authors: Kumar, Neil S.; Chin, Matthew; O'Neill, Craig; Jakoi, Andre M.; Tabb, Loni; Wolf, Michael Journal: American journal of sports medicine Issue: Volume 42:Number 9(2014:Sep.) Page Start: 2050 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗