Adrian Peterson had an MRI on Monday that revealed hehas a Grade 1 high ankle sprain and a Grade 2 low ankle sprain, the Redskins running Luke Tenuta Jerseys back told . But that's not stopping Peterson from preparing for Thursday's matchup against the Vikings as he said he expects to be "good" to Frank Reich Jerseys play against his former team. Redskins RB Adrian Peterson tells me his MRI...