Stefanos Tsitsipas defeats Hubert Hurkacz in straight sets at the Open 13 Provence on Wednesday.

Stefanos Tsitsipas dispatches Jan-Lennard Struff in straight sets to reach the quarter-finals in Sofia.

Stefanos Tsitsipas will go for his second ATP Tour title this week at the Sofia Open.

Stefanos Tsitsipas waves goodbye to the Rod Laver Arena crowd on Thursday night after a life-changing Australian Open run.

Stefanos Tsitsipas congratulates Rafael Nadal on Thursday night after their Australian Open semi-final.

Stefanos Tsitsipas, who was appearing in his first Grand Slam semi-final, was powerless against the brilliance of Rafael Nadal at the Australian Open.

#NextGenATP Greek Stefanos Tsitsipas reacts after defeating Roberto Bautista Agut to reach his maiden major semi-final.

Stefanos Tsitsipas, the No. 14 seed, stretches for a forehand in his quarter-final win over Roberto Bautista Agut at the Australian Open on Tuesday.

Stefanos Tsitsipas relaxes by creating videos for his YouTube channel.

Stefanos Tsitsipas had reached only one fourth round at a Grand Slam before the Australian Open.

#NextGenATP Greek Stefanos Tsitsipas saves all 12 break points he faces against Roger Federer to reach the Australian Open quarter-finals.

Stefanos Tsitsipas defeats Roger Federer in four sets at the Australian Open on Sunday.

Stefanos Tsitsipas is looking to achieve his best Grand Slam result yet at this year's Australian Open.

#NextGenATP Greek Stefanos Tsitsipas reaches the third round at the Australian Open for the first time on Wednesday.

Stefanos Tsitsipas hits 40 winners to move past Matteo Berrettini on Monday at the Australian Open.

#NextGenATP Greek Stefanos Tsitsipas defeats Guido Andreozzi in straight sets at the Sydney International on Wednesday.

Stefanos Tsitsipas defeats Alex de Minaur in four sets to claim the Next Gen ATP Finals crown.

ATP Chief Player Officer Ross Hutchins presents #NextGenATP Greek Stefanos Tsitsipas with the 2018 Most Improved Player of the Year Award.

Stefanos Tsitsipas earns his second victory at the 2018 Next Gen ATP Finals by defeating Frances Tiafoe.

Stefanos Tsitsipas wins 56 per cent of second-serve return points against Jaume Munar at the Next Gen ATP Finals on Tuesday.

Stefanos Tsitsipas defeats Jaume Munar in four sets at the Next Gen ATP Finals on Tuesday.

Stefanos Tsitsipas defeats Jaume Munar in four sets to win the first match of the 2018 Next Gen ATP Finals.

Stefanos Tsitsipas, an alternate in Milan last year, is the top seed at the Next Gen ATP Finals.

Stefanos Tsitsipas, Frances Tiafoe, Hubert Hurkacz and Jaume Munar are announced as Group A at the 2018 Next Gen ATP Finals.

#NextGenATP Greek Stefanos Tsitsipas earns his 41st match win of the season, defeating Peter Gojowczyk in Basel.