The NFL and the NFLPA are jointly reviewing the concussion suffered by Giants wide receiver Sterling Shepard in last week's game against the Cowboys and the procedures that allowed him to remain in the game after a third-quarter hit that caused the injury, according to a league source.
Shepard was injured on a head-to-head hit on a run block, grabbed his head, and fell to the ground on the play. He played all but one snap in the game.
Shepard entered the league's concussion protocol on Monday, the day after the game, and remains there. He was ruled out for Sunday's game against the Bills.