Romance seems to be doing more for the golfer's game than his tennis-playing girlfriend.
Love is all around for Caroline Wozniacki and Rory McIlroy
She is a former world No 1 in tennis. He is a former world No 1 in golf. And earlier this month they collaborated on perhaps their most public display of togetherness when she invited him to come out of the stand to play (and win) a point for her during an exhibition match against Maria Sharapova at New York's Madison Square Garden.
They met at Wimbledon last year, when the Northern Irishman, 22, saw the Dane, 21, play at Centre Court, and by August they were a couple.
They now adjust their schedules so that they can be together. McIlroy last summer confided that he would spend a few days in Cincinnati, where the WTA was playing a tournament, saying: "I've heard it's nice there this time of year."
August in Cincinnati? Not even the city's chamber of commerce would make that claim.
"Wozzilroy", as they are sometimes known, are not the first prominent golf-tennis romance. Sergio Garcia and Martina Hingis beat them to it, a decade ago.
In New York, Wozniacki was losing to Sharapova when she coaxed him on to the court. He displayed a nice backhand before sending up a lob that the Russian hit wide.
The romance has been better for McIlroy's golf than Wozniacki's tennis. He was No 1 only a week ago, while she has fallen to No 6. She may not particularly care, which is just more syrup on this gooey-sweet sports sundae.