I just saw their head to head. It is 3-0 in favor of Gonzalez. Their most recent meeting was on clay in Rome. Before that they played twice in 2005 one on grass and one Davis cup match on hard court both of which Gonzalez won
I like them both so tough to call. Would be happy if either make Shanghai but would still rather see Murray there. Just hope is a good match and no-one brain farts. One of them probably will though sadly.