Wigan Athletic midfielder Luis Antonio Valencia is likely to be out of action until March with a hamstring problem.
The Ecuador international suffered a recurrence of the problem during the first half of Saturday's goalless draw with Fulham and Latics boss Steve Bruce has admitted he made a mistake in rushing Valencia back into action.
"We've probably set him back two or three weeks," he told the Wigan Evening Post. "Antonio trained during the week and thought he was fit, but hamstrings are injuries you really have to be careful with.
"You probably can't get away with only two or three training sessions when you're playing at this level."
Meanwhile, after also losing Michael Brown and Mido to injury during a costly first half, Bruce admitted he "messed up".
"I played too many players who weren't match-fit or were only half-fit," he admitted.
"Mido was only half-fit, Brown had been sick before the game and wasn't right and Valencia had only had two or three training sessions.
"I put Hugo Rodallega in from the start and then Ben Watson came on after only 19 minutes, yet both hadn't started for six or seven weeks.
"With hindsight I wouldn't have picked the team I did. The one thing you can't do in the Premier League is play lads who are below their best.
"It doesn't do them any good or the team any good. Thankfully the back four were terrific and got us a point out of the game - we got away with it to that extent."