From Sports Illustrated: Jaguars linebacker Russell Allen thought he had his bell rung against the Bills in Week 15 last season. He played through the injury and double vision, but two days later found out he’d suffered a stroke on the field. A dead spot in his brain means he’ll never play football again.
Read full story here: http://mmqb.si.com/2014/04/22/russell-allen-jacksonville-jaguars-stroke/