Coco Gauff survived 15 double-faults on Thursday to squeeze out a 7-5, 4-6, 7-6 (7/4) win over Aryna Sabalenka to reach the WTA Toronto Masters quarterfinals.
The American teenager contributed just under half of the miscues in the error-strewn affair, with her opponent accounting for 18 additional doubles.
Tenth seed Gauff, who reached her first Grand Slam final at the French Open this year, and No 6 Sabalenka battled for three and a quarter hours in their third-round marathon.
Gauff finished with nine aces and saved 10 of 14 break points that she faced.
