Chelsea manager Carlo Ancelotti acknowledges his team have work to do on set plays after they twice conceded from corners to go down 2-1 at Aston Villa. The Barclays Premier League leaders led 1-0 thanks to Didier Drogba's 15th-minute goal, but defenders Richard Dunne and James Collins replied for the home side to condemn Chelsea to a second consecutive defeat away from home.

"We lost the game because we had two set plays," Ancelotti said. "We need to be more focused on the situation. Chelsea played a good game and we don't want to lose the game in that situation, only if the other team play better than us.

"Aston Villa were very able on the set plays. We want to do better for sure. We need more concentration."

A rare error from Villa goalkeeper Brad Friedel had allowed Drogba to put Chelsea ahead, but he atoned with a string of fine saves. Dunne then struck for the second successive match to put his side back on level terms, heading home a 32nd-minute corner from Ashley Young. And the winner came after 52 minutes when Collins found himself unmarked at the far post and powered his header past Petr Cech from Young's in-swinging corner for his first goal for the midlands club.

We want to do better for sure. We need more concentration.
Chelsea manager Carlo Ancelotti

Villa manager Martin O'Neill insisted his team were good value for their victory.

"We can definitely compete," he said. "We've a lot of good players in the team and it was a great effort against a top-quality team. My view is that anybody who finishes in front of Chelsea will win the Premier League.

"Set pieces are part of the game today - World Cup finals have been settled on set pieces - but that tended to overlook what we can do," said O'Neill. "We try to get it wide and we've got players who can electrify the crowd."

Former West Ham centre-back Collins, whose last goal was three-and-a-half years ago, was delighted to finally end his barren run. He said: "It's something we've been working on. I haven't scored for a long time and it used to be a big part of my game.

"We've got some big lads in the team and it helps when the delivery is great from Ash (Ashley Young) and Milly (James Milner). This stands us in good stead. We know what level we're at and got to stay there week in, week out."

Dunne added: "We know we're a good side and we have the confidence. The manager tells us every day how good we are. The last performance here was really good. We want to be up there with the top four or top six."