Seitenansicht eines Tennisspielers im Retro-Stil, der auf einem Stuhl mit einer Flasche Wasser am Tennisplatz sitzt - Stockfoto & -bild

Male athlete sportsman practice with jump rope at the outdoor stadium, increase stamina

Dominika Cibulkova of Slovakia returns a shot to Petra Kvitova of Czech Republic in their women's singles fnal match during the WTA Wuhan Open 2016 tennis tournament in Wuhan city, central China's Hubei province, 1 October 2016

Italian professional tennis player Fabio Fognini competes against Russian professional tennis player Daniil Medvedev during the quarterfinal of 2019 Rolex Shanghai Masters, in Shanghai, China, 11 October 2019

Young woman resting after doing sports on tennis court. Fitness and healthy lifestyle concept

Child practicing playing basketball in a local park

Shirtless Caucasian muscular man doing fitness exercises on the court in the morning at summer.

Retired Chinese tennis player Li Na poses at a launch event for "The Road to Wimbledon" program in Nanjing city, east China's Jiangsu province, 16 May 2016

Tunisian tennis player Malek Jaziri in action during a match of Barcelona tennis tournament Conde de Godo on April 20, 2016 in Barcelona