Shocking earliest grand slam exit for Serena Williams in 16 years
Defending French Open champion, who loses an hour after sister's loss, made 29 unforced errors
Defending champion and world number one Serena Williams was knocked out of the French Open on Wednesday throwing the women's tournament wide open.
The top seed lost 6-2, 6-2 in the second round to the world number 35 Garbine Muguruza, of Spain, with her defeat coming just an hour after sister Venus also went out 2-6, 6-3, 6-4 to Slovak teenager Anna Schmiedlova.
It was the earliest exit for a defending champion at Roland Garros since 2005 when Anastasia Myskina of Russia went out in the first round.
I just couldn't serve. But you can't be on form every day. I hate to be off at a grand slam
But it was a different story in the men's, as Serbia's Novak Djokovic eased past Jeremy Chardy 6-1, 6-4, 6-2.
Swiss Roger Federer also reached the third round with a 6-3, 6-4, 6-4 win over Argentine qualifier Diego Schwartzman.
Wednesday's defeat was Serena's worst at a grand slam in terms of games won and was only the second time in her career she had been beaten at a major in the round of 64.
The last time that happened was on her debut at the 1998 Australian Open.