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  1. Different balls are used at the Grand Slams. The Australian Open and the US Open both use Wilson tennis balls. Roland Garros uses Dunlop tennis balls and Wimbledon uses Slazenger tennis balls.

  2. Martina Hingis is the youngest player to win a Grand Slam singles title, after winning the Australian Open in 1997 at the age of 16 years and 3 months.

  3. Federer does not hold the record for longest time spent ranked number one. Pete Sampras holds this record, having spent 286 weeks as the world number one.

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