LONDON: Chelsea manager Carlo Ancelotti faces a nervous wait to discover how long Didier Drogba will be sidelined after the striker was stretchered off with a calf injury in his side’s 3-0 win over Tottenham.

Ancelotti’s side maintained their 100 per cent record under the Italian and regained top position in the Premier League with a convincing display at Stamford Bridge.

Tottenham could not conjure a reply to goals from Ashley Cole, Michael Ballack and Drogba and Chelsea have now set a club record sequence of 11 successive victories in league action, including fixtures from last season.

Drogba was stretchered off before the final whistle, as was Tottenham defender Sebastien Bassong, who was taken to hospital with a suspected fractured cheekbone. The visitors also lost Ledley King to a hamstring injury. Ancelotti was hopeful Drogba, who is banned for the next two Champions League fixtures, would not be forced to miss too much Premier League action as his side jousts with Manchester United at the top of the table once again.

He said: “We don’t know precisely what the problem is yet. It’s too early. We’ll have to wait some days to see. We hope it’s only cramp.”

Before the game, Ancelotti had tuned in to see Manchester United beat Manchester City 4-3.

But the Italian insisted he was not too concerned just yet with what was going on at Old Trafford. He said: “I’m interested that Chelsea play well and win. Other things are not important for us. I like to watch United’s games, but we have to think about us and our way.”