ISTANBUL: Former Wimbledon finalist Eugenie Bouchard stretched her winning streak to four matches for the first time in two years by beating top-seeded Svetlana Kuznetsova 7-6 (3), 6-7 (5), 6-2 in the second round of the Istanbul Tennis Championship.
Ranked 272nd and playing as a qualifier, Bouchard had three match points at 5-4 in the second set before Kuznetsova forced a deciding set.
The Russian was one of four seeded players knocked out in Thursday's second-round matches.
Bouchard, who reached the Wimbledon final in 2014 but lost to Petra Kvitova, will next face Danka Kovinic in the quarterfinals.
Kovinic eliminated sixth-seeded Alison van Uytvanck 6-3, 6-4.
Bouchard last went on such a run in 2018 when she won six straight from qualifying to the semifinals in Luxembourg.
Also, second-seeded Rebecca Peterson swept into the quarterfinals when her second-round opponent Margarita Gasparyan retired with a knee injury at 3-2 down in the first set.
Third-seeded Polona Hercog reached the quarterfinals by beating Jasmine Paolini 7-5, 6-4.
Tereza Martincova produced another surprise result with her defeat of No.4 Caroline Garcia 6-1, 6-4 in 1 hour, 9 minutes.
Patricia Maria Tig knocked out eighth-seeded Misaki Doi 6-2, 6-0.