of the USA was forced to pull out of the ATP Masters 1000 event in Shanghai, China due to injury.
The American was a set up against the inform Spaniard Garcia Lopez and he will now hope to rebound for the next ATP Masters 1000 event in Paris.
Roddick started the year in fine form winning the ATP Masters 1000 event in Miami for the 2nd time in his career beating Rafael Nadal in the Semi Finals and Tomas Berdych in the final in straight sets.
Nadal is now the world number 1 and he won the French Open for the 5th time in his career and he went on win a 2nd Wimbledon title this summer when he beat Berdych in the final also in straight sets.
A few weeks ago Nadal completed the career Grand Slam when he beat Novak DJokovic in 4 sets in the US Open final in New York.