With starting left tackle Arlington Hambright already sidelined by a lingering ankle injury, Oklahoma State took another hit when his replacement in the lineup — senior Shane Richards, who had been playing right tackle — suffered an injury in Saturday's win over Texas.
The 6-foot-8, 360-pound Richards appeared to injure his right leg on the first play of the second quarter.
OSU coach Mike Gundy said on Monday that both players remain questionable to return.
"Hopefully we can get Shane back," Gundy said at his weekly news conference. "We'll know a lot more (Tuesday) on him.