Andy Roddick forced out of action in Shanghai

Andy Roddick will play no further part in the Shanghai Masters after being forced to retire during his second-round match against Stanislas Wawrinka on Tuesday.

Despite leading 4-3 in the opening set, Roddick was forced off court with a knee injury.

Speaking after the match the 27-year-old American was unsure of the seriousness of the injury.

“I don’t really know what’s going on in there,” he said. “I’m not a doctor. I can’t really self diagnose myself, so I don’t really know.”

“I just felt I pushed off, and then Michal (Novotny – ATP Trainer) came on court and did some tests and advised that it probably wasn’t worth the risk until we know more.”

A successful stint in Shanghai would have seen Roddick qualify for the ATP World Tour Finals in London, but this year’s Wimbledon runner-up is still confident of playing at the O2 Arena.

“I think regardless of what I do from here on out, I still have a pretty good shot of qualifying, so that’s nice that I do have a little bit of a cushion.”

“I can’t really worry about that, because it’s out of my hands right now. We’ll move on, and handle what we can handle from here on out.”