Victoria Azarenka unsure over fitness

Victoria Azarenka has admitted that she is not yet sure if she will be fit enough to continue her quest for her first Wimbledon title.

The world number three suffered a leg injury as she slipped during her first-round match against Maria Joao Koehler earlier today.

She was able to continue and win the encounter 6-1 6-2, but the 23-year-old has revealed that the problem has caused her to suffer a lot of "pain".

"It's such a shock to me. I slipped and it felt like my whole body collapsed. I don't know what happened out there. I just tried to stay in the moment and give the best I could. It was definitely very emotional," she told BBC Sport.

"I was in such pain at the beginning, it wouldn't stop. I almost slipped one time before that. It shouldn't be like that on grass, we are not on clay anymore. I will do the best I can just to be ready for the next match and we will see what happens."

Should she overcome the problem, Azarenka will face Flavia Pennetta for a place in round three.