London - Garbine Muguruza, the second seed and French Open champion, was knocked out of Wimbledon in the second round on Thursday, losing 6-3, 6-2 to Slovak qualifier Jana Cepelova.
Spanish 22-year-old Muguruza, the runner-up to Serena Williams at the All England Club last year, sank to defeat against the world number 124 in just 59 minutes.
Cepelova, who knocked out Simona Halep when the Romanian was ranked three at last year's Wimbledon also on Court One, faces Czech 28th seed Lucie Safarova for a place in the last 16.
Muguruza was bidding to become only the eighth woman to win the French Open and Wimbledon back to back.