Wilson is the Official Ball of the US Open and the Australian Open Grand Slam Championships. Extra duty ideal for longer play on hard court surfaces. Exclusive Tex Tech Industries felt from Wilson provides premium performance and long lasting durability.
Pro Penn Marathon is Penn’s longest lasting tennis ball featuring exclusive Encore™ Technology for a 22% longer lasting core and high tenacity LongPlay® Felt for extended play. Pro Penn Marathon is the official ball of PTR because of its guaranteed longev