World No . 1 Novak Djokovic pays tribute to first coach Jelena Gencic after reaching quarters . Tommy Haas makes history as oldest French Open quarterfinalist since 1971 . TL;DR
World No . 1 Novak Djokovic pays tribute to first coach Jelena Gencic after reaching quarters . Tommy Haas makes history as oldest French Open quarterfinalist since 1971 . Rafa Nadal is serenaded on 27th birthday by Parisian crowd as he beats Japan 's Kei Nishikori .