Felix Auger-Aliassime celebrates his championship match win against Holger Rune on Sunday at the Swiss Indoors Basel.

Felix Auger-Aliassime in action against Holger Rune on Sunday in the final of the Swiss Indoors Basel.

Ivan Dodig and Austin Krajicek claim their third ATP Tour title of the season on Sunday at the Swiss Indoors Basel.

Holger Rune fires 46 winners and 11 aces in a Basel semi-final victory.

Felix Auger-Aliassime defeats World No. 1 Carlos Alcaraz on Saturday in Basel.

Carlos Alcaraz is seeking his sixth tour-level of the season this week in Basel.

Felix Auger-Aliassime earns his 51st victory of the season on Friday in Basel.

Stan Wawrinka celebrates his second-round win against Brandon Nakashima on Thursday in Basel.

Felix Auger-Aliassime drops just seven points in the second set of his Basel victory.

Ivan Dodig and Austin Krajicek advance to their eighth tour-level semi-final of the season on Thursday in Basel.

Felix Auger-Aliassime downs Marc Andrea-Huesler in three sets on Wednesday at the Swiss Indoors Basel.

Holger Rune defeats Alex de Minaur on Wednesday to reach the second round of the Swiss Indoors Basel.

Stan Wawrinka advances to the Basel second round for the seventh time.

Carlos Alcaraz fires 39 winners in a winning Basel debut.

Novak Djokovic defeated three-time defending champion Roger Federer in three sets in the 2009 Swiss Indoors Basel final.

Roger Federer celebrates his 10th Basel trophy and 103rd tour-level title on Sunday.

Roger Federer needs just 68 minutes to beat Alex de Minaur on Sunday, clinching his 10th Basel title.

Roger Federer doesn't drop a set en route to his 10th Basel title.

Jean-Julien Rojer and Horia Tecau lift their 20th tour-level team trophy at the Swiss Indoors Basel on Sunday.

Roger Federer has reached the Basel final in 15 of his 19 main draw appearances.

Roger Federer has dropped just 14 games en route to reaching the final in Basel.

Alex de Minaur defeats Reilly Opelka in the Basel semi-finals to take a 4-0 lead in their FedEx ATP Head2Head series.

Stefanos Tsitsipas has won 10 of his past 12 matches.

Reilly Opelka strikes at least 10 aces in each set — and 31 total — to defeat Roberto Bautista Agut in Basel.

Stan Wawrinka defeats Frances Tiafoe in three sets to reach his fifth Basel quarter-final.