Coach Carlo Ancelotti believes Chelsea can cope without star striker Didier Drogba even if his calf injury sidelines him for a long time.

The Ivory Coast international was carried off in the 83rd minute of Chelsea's 3-0 Barclays Premier League victory over Tottenham on Sunday.

Drogba had already made and scored one of Chelsea's goals before he had to be substituted.

The victory earned Chelsea a new club record of 11 straight wins, better than the one forged by Jose Mourinho, but Ancelotti was more concerned with the condition of his top striker.

"We don't know precisely what happened," said Ancelotti. "It is too early. We will have to wait a few days. We hope it is only cramp.

"We hope tomorrow (Monday) we will have a precise diagnosis of the situation. It is a calf injury but he felt that he had cramp. If it is cramp, it is good for us. We have played without Didier before. He is a very important player for us, a fantastic player. I think we can play well without Didier."