The company, which has been endorsed by the likes of basketball legend Michael Jordan, tennis star Andre Agassi and now golf's rising star Rory McIlroy, will have to plug the gap left by the fall of one of its most marketable names.

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The McEnroe-Connors era gave way to the Sampras-Agassi-Courier-Chang era, and American tennis and its popularity was in good hands.

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Nick Bollettieri, whose famous tennis academy has produced the likes of Andre Agassi and Maria Sharapova, agrees with Roddick.

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Agassi is also well known for his Andre Agassi Foundation for Education, which started a school for disadvantaged youth in Las Vegas, where the power tennis couple lives, and is very vocal and involved in his charitable cause.

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Former world tennis No. 1 Rafael Nadal has restricted his appearances outside of the Wimbledon Championships, while Andre Agassi was ordered to pay a proportion of his sponsorship income after losing a U.K. court case in 2006.

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