Its worth noting that Mathieu's form on hard court has been dreadful. He has won some matches on clay, including a couple of rounds at the French, but the last time he won on a surface other than clay was in Indian Wells at the start of March. He was knocked out in the first round of Queens, Nottingham, Wimbledon, Gstaad, Totonto and Cincinatti. He won a single round on clay in Amerfoort. Mathieu will certainly be somehat lacking in confidence!
Still Mathieu is a good player when he puts his mind to it, Josh may have his work cut out here. He is playing well, though, so the best of luck to him - Mathieu is not known for being mentally strong, Josh may have an advantage there.
I'm sure Josh could win this match, but he'll have to play well out of his skin to do so no matter how out of form Mathieu is. But I'll still go for Josh in 5 sets
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Supporting Andy Murrays charge to the 2009 Wimbledon crown.