Manchester United boss Sir Alex Ferguson admits they were in debited to Edwin van der Sar after victory at Bolton Wanderers.

Van der Sar made important stops from Johan Elmander and Fabrice Muamba with the game at 1-0, two saves that Sir Alex described as match-winning.

"They were absolutely magnificent saves, the second one in particular from Muamba. He did well to reach that," said Ferguson after the 4-0 success.