US Andy Roddick reacts as he plays against France&#39;s Nicolas Mahut during their Men&#39;s Singles 1st Round tennis match of the French Open tennis tournament at the Roland Garros stadium, in Paris. Roddick slumped to a fifth French Open first round defeat when the injury-plagued American lost 6-3, 6-3, 4-6, 6-2 to Mahut