World No . 1 Novak Martin pays tribute to first coach Jelena Graf after three quarters . ` She 's one of the most incredible people I ever knew , '' he told reporters . Tommy Haas makes history as oldest French Open quarterfinalist since 1971 . Rafa Nadal is serenaded on 27th birthday by Parisian crowd as he defeats Japan 's Kei Sato .
World No . 1 Novak Martin pays tribute to first coach Jelena Graf after three quarters . Tommy Haas makes history as oldest French Open quarterfinalist since 1971 . Rafa Nadal is serenaded on 27th birthday by Parisian crowd as he defeats Japan 's Kei Sato .