Jack Draper beat Felix Auger-Aliassime in controversial circumstances at the Cincinnati Open as Carlos Alcaraz smashed his racquet during a defeat by Gael Monfils.
Draper emerged a 5-7 6-4 6-4 winner, despite Auger-Aliassime arguing with the umpire that the Briton should not have been awarded the final point of their last-16 match.
The Canadian claimed the ball had hit the frame of Draper's racket and then the floor on match point, saying his opponent "shanked it on the floor", though the umpire disagreed.
Auger-Aliassime eventually conceded defeat, although replays appeared to back up his claim.