(CNN) -- Not content with dominating the world of golf, Rory McIlroy showed off his tennis skills at an exhibition in Madison Square Garden featuring his girlfriend Caroline Wozniacki. The Dane was struggling at a set and 5-4 down to Maria Sharapova when she lightheartedly asked McIlroy, who was among the audience, for his help. The 22-year-old from Northern Ireland needed no second prompting and to the delight of the sell-out 18,000 crowd took up her offer. Addressing the tennis ball as if playing a golf shot, McIlroy tried surprise tactics on Sharapova by quickly starting a rally with a top-spin forehand.
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Rory McIlroy turns his hand to tennis at an exhibition event in New York
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New golf no.1 'wins' rally against Russian superstar Maria Sharapova
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Sharapova beats McIlroy's girlfriend 6-3 6-4
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Andy Roddick beats Roger Federer 7-5 7-6 at Madison Square Garden
Unfortunately for fourth-ranked @placeholder, her Russian opponent was not so generous to her and closed out a 6-3 6-4 victory.