I’m a big believer that relationships in sports can have a positive or negative effect on performance. When the relationship is good, the results in competition are good. But when the relationship is bad, it can be devastating to performance.

That’s why I believe it’s no coincidence that Caroline Wozniacki experienced a three year drought on the tennis courts during her relationship with PGA golfer Rory McIlroy. According to USA TODAY the breakup came about after a phone call from McIlroy after the wedding invitations were printed…”At 25, he’s clearly playing better without her. At 24, she’s clearly playing better without him.” I wouldn’t be surprised if she won the U.S. Open.