Arian Foster and Shane Lechler will both be game-time decisions this Sunday against Buffalo.
Both were listed as questionable on Friday's injury report. Foster is dealing with a hamstring injury while Lechler has a hip injury.
"We'll have to work those guys out Sunday before the game," head coach Bill O'Brien said after Friday's practice.
Foster said on Monday that his hamstring "felt good" before Sunday's game against New York, but that
it didn't feel good enough to play. He also said he was "day-to-day".
Alfred Blue started for Foster against the Giants, and picked up 78 yards on 13 carries. Regardless of whether Blue starts in place of Foster, or comes in as the backup, it doesn't change how he gets ready.
"I prepare every week like I'm going to play a big role," Blue said. "That's how I come into the week of practice, because you never know. Arian, he can be in one minute, and be down the next minute. You just gotta stay prepared and be ready for the opportunity when your number is called."
Kickoff is at noon CT on CBS-11/KHOU.