The second day of quarterfinal action at the Australian Open saw the downfall of the tournament's top overall seed.
In a sloppy match, world No. 1 Ashleigh Barty fell to 25th seed Karolina Muchova 1-6, 6-3, 6-2 on Wednesday.
While Barty dominated early, her fortunes reversed after Muchova took an injury timeout when down 2-1 in the second set. Muchova won five of the next six games from there, then broke Barty early in the third set and held serve for a stunning comeback win.
That timeout created a fair amount of controversy, with some speculating it was rooted more in gamesmanship than a legitimate medical concern.