He wouldn't put a date on when the groin began bothering him, and he was hopeful he could stay on the field Sunday.
He knew his day was over when he took the ball on a draw play and couldn't burst through a hole the offensive line had provided.

Bell had only six carries for 20 yards, and his absence was felt by an offense that sputtered near the goal line. DeAngelo Williams had a touchdown run for Pittsburgh, but the Steelers rushed for just 54 yards.
"It sucks that I couldn't be there for them,Ultra Boost Sale," Bell said,Cheap Vapormax China, a look of disgust on his face.
Against New England, however, the injury did him in.
Bell was sensational in playoff wins over Miami and Kansas City, rushing for 167 yards vs. the Dolphins and 170 against Kansas City. Despite being suspended for three games in 2016, Bell rushed for 1,Under Armour Curry Shoes Sales,268 yards and seven touchdowns during the regular season. He added 75 receptions for 616 yards and two scores.
"Yeah. I've been trying to micromanage it through the whole thing, just trying to keep it to myself and not trying to scare anybody," Bell said. "Today,Cheap Kevin Durant, it just kind of broke the camel's back and I couldn't go."
"I saw the seam and couldn't hit it," he said. "It was like I was running 50 percent out there. At that point, I knew I couldn't go. I was holding the team back."
"I thought I could still fight through it,Chase Edmonds Jersey," he said. "Today, it was something weird about the tackle. It just hurt too bad. I just couldn't do anything."
FOXBOROUGH, Mass. (AP) — Steelers star running back Le'Veon Bell was bothered by a groin injury even before he was forced to leave the AFC championship game in the second quarter of Pittsburgh's 36-17 loss to New England.
Bell knew during warmups he wasn't close to 100 percent.