The 13th-seeded Wozniacki lost 7-6 (5), 4-6, 6-2 on Tuesday to 64th-ranked Yanina Wickmayer of Belgium.
It’s the first time Denmark’s Wozniacki was beaten in her opener at Roland Garros since 2007, her debut at the clay-court Grand Slam tournament.
Wozniacki was ranked No. 1 in 2010, a year after she reached the final of the U.S. Open. She’s been as far as the semifinals three other times at Grand Slam tournaments.
Last week, McIlroy announced he and Wozniacki mutually decided to split only days after sending out wedding invitations. They began dating in 2011.
On Sunday, McIlroy won a European Tour event in England.
More Sports Headlines
Seahawks escape with 13-10 victory over winless Lions Lions force Seahawks' Wilson to run for his life Seahawks' defense benefits from missed call Seahawks cornerback Williams plays his best game against Lions Seahawks report card Seahawks improve to 22-8 on MNF Huskies' Petersen thinks Trojans are underrated? Rams linebacker Ogletree to have surgery for broken right ankle
Our new comment system is not supported in IE 7. Please upgrade your browser here.