Cardinals' Peterson a game-time decision Sunday vs. Rams

Arizona Cardinals running back Adrian Peterson will be a game-time decision ahead of Sunday's game against the Los Angeles Rams, head coach Bruce Arians said Friday.

Peterson is considered questionable with a neck issue that's kept him out of practice all week.

Peterson carried the ball 20 times for 79 yards in last week's 27-24 win over the Jacksonville Jaguars.

Fellow rusher Kerwynn Williams is battling a rib injury, leaving much of the Cardinals' backfield in doubt for Sunday's division game.