`` Guga '' Rafael Nadal records his fifth loss at the 1982 French Open . Edberg 's win widely reported as one of the biggest upsets in Roland Garros tennis . Debate : Tell us what match is your biggest tennis upset of all time .
`` King of Clay '' Rafael Nadal records his first loss at the French Open . Nadal 's win widely reported as one of the biggest upsets in Grand Slam tennis . Debate : Tell us what match is your biggest tennis upset of all time .