Jannik Sinner in fourth-round action against Stefanos Tsitsipas on Sunday in Melbourne.

Jannik Sinner wins 20 of 22 net points in his Australian Open second-round victory.

Jannik Sinner reaches the Australian Open second round for the third time.

Twenty-one-year-old Jannik Sinner and 99-year-old Henry Smith share a hit in Adelaide.

Jannik Sinner, City Councilor Peter Hanke and Grigor Dimitrov meet at Vienna City Hall.

Jannik Sinner defeats Aleksandar Vukic on Friday in Sofia.

Jannik Sinner falls to Carlos Alcaraz in New York in the early hours of Thursday morning.

Jannik Sinner and Carlos Alcaraz battled for five hours and 15 minutes on Arthur Ashe Stadium.

Jannik Sinner defeats Christopher Eubanks on Thursday in straight sets to reach the third round of the US Open.

Jannik Sinner fires a serve during his first-round match against Daniel Altmaier at the US Open on Tuesday.

Jannik Sinner advances to the second round in Cincinnati with a three-set win on Tuesday.

Jannik Sinner stretches to flick a ball back against Pablo Carreno Busta in Montreal.

Champion Jannik Sinner and finalist Carlos Alcaraz pose with their trophies after the final in Umag on Sunday.

Jannik Sinner advances to his eighth tour-level final in Umag.

Jannik Sinner in action against Novak Djokovic at Wimbledon on Tuesday.

Jannik Sinner defeats Carlos Alcaraz on Sunday to reach the quarter-finals at Wimbledon.

Jannik Sinner in action against Carlos Alcaraz at Wimbledon on Sunday.

Jannik Sinner does not face a break point on Friday in a straight-sets win against John Isner at Wimbledon.

Jannik Sinner earns his first Wimbledon win in his second main-draw appearance.

Jannik Sinner celebrates his victory over Mackenzie McDonald on Saturday at Roland Garros.

Jannik Sinner in action against Mackenzie McDonald on Saturday in Paris.

Jannik Sinner hits 59 winners on Thursday to defeat Roberto Carballes Baena at Roland Garros.

Jannik Sinner celebrates reaching his fourth ATP Masters 1000 quarter-final.

Jannik Sinner survives a three-set test against Fabio Fognini.

Jannik Sinner defeats Pedro Martinez in the Rome opening round, taking the pair's first ATP Head2Head meeting.