Andy Roddick forced out of action in Shanghai

Roddick will play no further part in the Shanghai Masters after being forced to retire

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.”