Frank Lampard's penalty rescued a point for Chelsea at West Ham as the Premier League leaders missed the chance to move six points clear at the top. With Manchester United having lost 3-0 at Fulham on Saturday, Chelsea knew they could open up a significant gap over the champions with a win at Upton Park.
However, Alessandro Diamanti scored from the penalty spot shortly before half-time to give West Ham the lead after Ashley Cole had brought down Jack Collison. But Chelsea equalised in somewhat bizarre circumstances just after the hour mark.
Matthew Upson looked to have won the ball but was judged to have brought down Daniel Sturridge. Upson was booked for his protests before Lampard stepped up to score from the spot.
However, the referee spotted several players encroaching and made Lampard take it again, and then once more for good measure after yet more encroachment.
Birmingham's five-match winning streak came to an end at Goodison Park as they were outplayed by Everton in a 1-1 draw.
Diniyar Bilyaletdinov's sixth-minute goal was all the hosts had to show for their early dominance and they were caught cold when Sebastian Larsson equalised with Birmingham's first shot of the match midway through the first half.
Everton continued to control the game after the interval but never really threatened to add a second. Not only did the result end Birmingham's excellent run of results, it also extended Everton's sequence to just one victory in 11 league matches.
Wolves boss Mick McCarthy had the last laugh as his recalled first-choice players overcame Burnley thanks to goals from Nenad Milijas and Kevin Doyle to move out of the Premier League bottom three.
McCarthy had come in for heavy criticism after fielding a virtual reserve team at Manchester United in midweek to ensure his players were fresh to face the Clarets. But any anger among the Wolves fans over that move was forgotten as Milijas and Doyle secured a third win in four matches for the midlands club. It moved them level on 19 points with Burnley who have now gone seven games without a win.