![Roger Federer of Switzerland hits a smash against Juan Martin Del Potro of Argentina during their men's singles quarter-finals match at the Australian Open tennis tournament in Melbourne January 24, 2012. REUTERS/Darren Roger Federer of Switzerland hits a smash against Juan Martin Del Potro of Argentina during their men's singles quarter-finals match at the Australian Open tennis tournament in Melbourne January 24, 2012. REUTERS/Darren](https://c8.alamy.com/comp/2CWFRK5/roger-federer-of-switzerland-hits-a-smash-against-juan-martin-del-potro-of-argentina-during-their-mens-singles-quarter-finals-match-at-the-australian-open-tennis-tournament-in-melbourne-january-24-2012-reutersdarren-whiteside-australia-tags-sport-tennis-2CWFRK5.jpg)
Roger Federer of Switzerland hits a smash against Juan Martin Del Potro of Argentina during their men's singles quarter-finals match at the Australian Open tennis tournament in Melbourne January 24, 2012. REUTERS/Darren
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31.03.2021, Biel, Swiss Tennis Arena, ITF WORLD TENNIS TOUR M25 BIEL: Leandro Riedi (Schweiz) vs Dominic Stricker (Schweiz), (Switzerland/Croatia OUT Stock Photo - Alamy
![Roger Federer of Switzerland hits a smash to Carlos Berlocq of Argentina at the U.S. Open tennis championships in New York August 29, 2013. REUTERS/Ray Stubblebine (UNITED STATES - Tags: SPORT TENNIS Roger Federer of Switzerland hits a smash to Carlos Berlocq of Argentina at the U.S. Open tennis championships in New York August 29, 2013. REUTERS/Ray Stubblebine (UNITED STATES - Tags: SPORT TENNIS](https://c8.alamy.com/comp/2CX9B0P/roger-federer-of-switzerland-hits-a-smash-to-carlos-berlocq-of-argentina-at-the-us-open-tennis-championships-in-new-york-august-29-2013-reutersray-stubblebine-united-states-tags-sport-tennis-2CX9B0P.jpg)