Fergie:
"In the first half, to be honest, both teams found the pitch difficult. In the second half, they both found a way to play on it."
"This result is a giant stride for my team. Chelsea is always a difficult game here and we have managed to win.
"Neither Manchester United nor Chelsea would have benefited from a draw today. Both would have suffered.
"In the end the perseverance has given us the victory. In the second half I thought our performance was far better.
"Their goalkeeper has made three excellent saves in the second half.
"We've hit the post and Roy Keane had a great chance to put us in the lead."
'Diego's movement was terrific - that amount of energy at the end of a game is so important.'
"It is Diego's most important goal to date. He has scored some important goals this season but that one could be absolutely vital."
"When they left Zola on his own with five minutes left, they were sitting on what they had. I decided to take off Mikael Silvestre and take a chance on Ryan Giggs pushing forward from left-back.
"The ending will live with the best of them. It was an important game and we won it.
"I wouldn't say Chelsea are out of the title race but it is going to be difficult for them now. The important thing for us is to concentrate on our own position.
"We are right behind Arsenal now. If we keep knocking on the door, hopefully it will open."
Ranieri:
We were the better team in the first half but we were very unlucky. I thought we would have taken one point but Manchester had the killer instinct and we didn't.
"We caused Manchester United a lot of difficulties, so I can be happy with that, if not the result.
"I never thought we could win the League and at the moment I don't know who will.
"The fight is between Arsenal and Manchester United now."