Rams RB Pead a surprise inactive

ST. LOUIS -- Running back Isaiah Pead is among the St. Louis Rams' seven pre-game inactives in something of a surprise move.

With starter Daryl Richardson battling a foot injury, Pead was prominently involved in last week's game against Dallas but he doesn't factor into tonight's plans, apparently.

Pead's inactivity allows rookie running back Zac Stacy a chance to play and it seems likely he'll get some touches to help spell Richardson. Of course, if Richardson aggravates his foot injury again, the Rams will be awfully thin at running back with only Stacy and fellow running back Benny Cunningham having any professional carries under their belt.

This can't be viewed as anything but another step back in Pead's young career. He's struggled to gain traction in a number of ways and missing the chance to help an ailing run game doesn't speak well of his current place in the pecking order.

On the other side, no surprises as linebacker Patrick Willis is inactive for San Francisco and tight end Vernon Davis is active and available.

Here's the complete inactive list for both sides:

Rams: OT Rodger Saffold, DE William Hayes, OT Mike Person, OL Barrett Jones, OL Brandon Washington, RB Isaiah Pead, TE Mike McNeill

49ers: QB B.J. Daniels, WR Chris Harper, WR Marlon Moore, CB Nnamdi Asomugha, FB Owen Marecic, LB Patrick Willis, G Joe Looney