Rory mcilroy and caroline wozniacki

Golfer Rory McIlroy and tennis pro Caroline Wozniacki have reportedly split, weeks after breakup rumors began to swirl and after Wozniacki posted an embarrassing photo of her beau to Twitter.

Ireland's Independent reported Sunday that McIlroy has split from Wozniacki following speculation in the tabloids.

A source told the paper that the decision to end the relationship came after she posted to Twitter a photo of McIlroy sleeping with his mouth wide open on Sept. 16.

Rory mcilroy and caroline wozniacki wedding

"Rory was very upset by it and even Serena Williams pointed out -- albeit in a joking way -- it was a pretty mean thing to do," a source told the Independent. "There were a lot of tears. She still has her profile picture on her social-networking site set as the two of them in happier times, but I can tell you the pair are no longer an item."

The two started dating back in 2011.

The U.S. Open champion said their relationship was built on common interests and the fact that they understand each other. Rumors o