The initial diagnosis is a torn left Achilles, a source told ESPN, confirming a report by the Houston Chronicle. Foreman will have an MRI on Monday to confirm the injury.
Foreman's injury came with 6 minutes, 19 seconds left in the game and gave the Texans the winning 10-point lead. Foreman fell into the end zone and quickly reached for his left leg.
"Whoever hit it, just kind of twisted it, I guess, and I fell," Foreman said. "I was just happy I was by the end zone. So it worked out."
Foreman was looked at by the Texans' training staff before being helped off on a cart.
In the locker room after the game, Foreman was on crutches while he spoke to the media. At the time, he said he was still waiting for a diagnosis. The rookie running back ran for 65 yards on 10 carries and two touchdowns and had three catches for 15 yards. He called the game "bittersweet."
"I just wanted to get something started," Foreman said. "I felt like in the [first half] I didn't really play like I wanted to play," Foreman said. "I knew in the second half I just had to go out there and try to make some plays and try to help us win the game, and I feel like I did that."