Texans head coach Gary Kubiak said Friday that Foster will be a game-time decision.
"He practiced today much like he did yesterday. He took a limited amount of reps, but he was involved in the whole practice," Kubiak said.
Foster will participate in a walk-through practice on Saturday morning and a light workout before Sunday's game before the decision is made on whether or not he will play.
"We need Arian ... but at the same time we're listening to Arian," said Kubiak. "As we put him through some work, we listen to him the next morning. How you feeling? Listen to the doctors and we'll come up with the best decision for the football team on Sunday morning."
After missing the first game of the season, Foster played last week and rushed 10 times for 33 yards. He also caught two passes for seven yards.
Foster rushed for an NFL-best 1,616 yards and 16 touchdowns last season, becoming one of the premier backs in the league, but aggravated the left hamstring injury on August 27.
Despite his status as a game-time decision, Foster said he felt "wonderful" on Friday.
"I'm just not sure how to gauge progress with a hamstring injury anymore. It's tough, but I'm working, I'm working hard and it feels like it's gone," Foster said. "But I'm going to keep on fighting the good fight."