Mattek, though expected to go out in the first round of the U.S. Open to her pal Madison Brengle, won their match, 6-4, 6-1. You'll recall that the witty, shock-dressing Mattek has completely retooled her game, and says it will be a while before she sees the results pay off. Despite her great serve, she probably won't see those results in the second round: She plays Shahar Peer.
The only photo I could find of Mattek in her first round is one shot at such an angle that I refuse to give the photographer publicity by linking to it. For the record, though, she is wearing a gold metallic dress and matching headband.
August 30 update: I just saw Mattek's latest outfit--metallic silver and black--and I am now rather forgiving of the photographer.