Manchester United striker Wayne Rooney is likely to be out for four weeks after suffering a leg injury during the 3-2 win over Fulham.
Rooney had been dropped to the bench for the game at Old Trafford, but was introduced in the second half for Shinji Kagawa.
However, with United hanging on for the win in injury-time, Rooney suffered a huge cut to his right leg after he had attempted to charge down Hugo Rodallega's shot.
Rodallega's studs appeared to inadvertently come down on Rooney's leg and the England international was stretchered off after the United physio had attempted to close the wound.
Speaking after the game, United boss Sir Alex Ferguson confirmed he is likely to be without Rooney for the next month.
"It was a very bad one," said Ferguson. "He has gone to hospital. It looks like he will be out for four weeks.
"Obviously you have to take care of these things in terms of infection and he's gone to the best place, so hopefully he'll be okay.
"He followed through Rodallega after the shot and caught him, but it was an accident, of course."
It means Rooney is facing a battle to be fit for United's first UEFA Champions League group game in the middle of September, and he also looks set to miss England's opening 2014 World Cup qualifiers against Moldova and Ukraine early next month.