Chelsea goalkeeper Petr Cech was delighted with victory at Manchester United.
The three points strengthens their grip on a top four place.
"'It was a massive moment," Cech told Sky Sports 1.
"After the results yesterday (both Arsenal and Tottenham won), we knew we had to win.
"We have a massive game and we go into the game three ahead - if we win we leave them behind, it changed the preparation for Wednesday."