"I feel good, I feel better," McCoy said, according to the team's official website. "Whether it was food poisoning or a little 24-hour bug, I don't know. I had something yesterday that wasn't good, but I'm over it now and I feel good. I feel better."
Browns coach Eric Mangini said McCoy looked a lot better and that it shouldn't be difficult for the quarterback to catch up with the game plan.
"There were a lot of details yesterday, and he was able to get the information," Mangini said. "He went to the walk-through and really thought he had a shot at practicing, but he took the reps in the walk-through, where he went through quite a few of the plays. It's just at a much slower tempo. That actually is a good thing because you can really take some more time to go through it, and today, he'll catch up at a higher speed as well as get the third-down install."
Hillis, who has rushed for 1,129 yards this season, gained 144 earlier this season against the Ravens.
The Associated Press contributed to this report.