Novak Djokovic returns a shot to Germany’s Jan-Lennard Struff during their Tokyo 2020 Olympic Games men’s singles second-round match at the Ariake Tennis Park in Tokyo. Photograph: Giuseppe Cacace/AFP via Getty Images

After Novak Djokovic took his first small step towards a gold medal on Saturday, his defeated first-round opponent, the world number 140 Hugo Dellien (...)

 Germany’s Alexander Zverev returns the ball to Spain’s Alejandro Davidovich Fokina during their men’s  quarter-final at the French Open. Photograph:  Anne-Christine Poujoulat/AFP via Getty Images

Alexander Zverev cruised into the semi-finals of the French Open for the first time with a 6-4 6-1 6-1 win over Alejandro Davidovich Fokina. After a(...)

Greece’s Stefanos Tsitsipas returns the ball to John Isner of the US during their  third-round  match at the French Open at  Roland Garros. Photograph: Christophe Archambault/AFP via Getty Images

Stefanos Tsitsipas quelled the firepower of John Isner to reach the fourth round of the French Open under the lights at Roland Garros. If the fifth s(...)

 Roger Federer  reacts during his quarter-final loss to Nikoloz Basilashvili of Georgia in the Qatar ExxonMobil Open at Khalifa International Tennis and Squash Complex in Doha. Photograph: Mohamed Farag/Getty Images

Roger Federer’s comeback from injury ended in the quarter-finals of the Qatar Open after he was beaten by Nikoloz Basilashvili. On Wednesday, Federer(...)