Jannik Sinner was impressive in his victory over Ugo Humbert on Monday in Rome.

Jannik Sinner was impressive in his victory over Ugo Humbert on Monday in Rome.

Jannik Sinner was in control against Guido Pella on Tuesday in Madrid.

Jannik Sinner will make his Mutua Madrid Open debut this year.

Jannik Sinner becomes the youngest Barcelona semi-finalist since 2005 after beating Andrey Rublev on Friday.

Jannik Sinner made his Barcelona debut on Tuesday

Jannik Sinner made his Barcelona debut on Tuesday.

Jannik Sinner breaks Albert Ramos-Vinolas' serve three times to set a second-round blockbuster against Novak Djokovic in Monaco.

Jannik Sinner, the 19-year-old #NextGenATP star, can become the youngest Miami champion in tournament history on Sunday.

Jannik Sinner beats Roberto Bautista Agut in three sets on Friday in Miami to reach his first ATP Masters 1000 final.

Jannik Sinner will vie for his maiden ATP Masters 1000 final against seventh seed Roberto Bautista Agut in Miami.

Alexander Bublik and Jannik Sinner have met twice on the ATP Tour this month.

Alexander Bublik asks Jannik Sinner if he is human at the conclusion of the Miami Open presented by Itau quarter-final.

Jannik Sinner is making his debut at the Miami Open presented by Itau this year.

Jannik Sinner beats Emil Ruusuvuori in straight sets to reach the Miami quarter-finals on his tournament debut.

Jannik Sinner will take on Emil Ruusuvuori for the first time at ATP Tour level for a place in the quarter-finals in Miami.

Jannik Sinner prevails in two hours and 50 minutes over 14th seed Karen Khachanov to reach the Round of 16 in Miami.

Jannik Sinner battles back to take a 2-1 ATP Head2Head series lead against Karen Khachanov on Sunday in Miami.

Jannik Sinner does not lose his serve in a straight-sets victory against fellow #NextGenATP player Hugo Gaston on Friday in Miami.

Jannik Sinner hits 48 winners past Roberto Bautista Agut on Wednesday in Dubai.

Jannik Sinner was chasing his second ATP Tour title of the season this week in Marseille, where he lost against Daniil Medvedev.

Jannik Sinner rallies from down a break in the third set on Monday to beat Gregoire Barrere in Marseille.

Jannik Sinner owns a 5-1 record in 2021.

Jannik Sinner digs deep, but Denis Shapovalov gets the better of the Italian early Tuesday morning at the Australian Open.

Jannik Sinner, the Great Ocean River Open titlist, is locked in a fifth set against No. 11 seed Denis Shapovalov at the Australian Open on Monday.