Chelsea had a good night against Manchester United at Stamford Bridge, beating the Red Devils 2-1.
United wanted to win to extend their lead at the top of the Premier League, and things seemed to be going their way when Wayne Rooney scored in the first half.
But after the break, the Blues fought back and a volley from David Luiz soon levelled the scores.
With just 10 minutes to go, United weren't happy when the Blues were awarded a penalty after a clash between Chelsea substitute Yuri Zhirkov and Chris Smalling.
Frank Lampard was right on target to net the goal and a vital three points for his team.
The final result means United stay four points ahead of Arsenal, who have a game in hand, at the top of the Premier League, while Chelsea move up into fourth place.