Jessica Pegula, the two-time defending champion at the National Bank Open, was upset 3-6, 6-4, 6-1 by Anastasija Sevastova, while Naomi Osaka cruised into the fourth round.

Two-time defending champion Jessica Pegula was eliminated in the third round of the National Bank Open, falling 3-6, 6-4, 6-1 to Anastasija Sevastova on Friday

Anastasija Sevastova stunned two-time defending champion Jessica Pegula 3-6, 6-4, 6-1 on Friday to book a fourth-round clash with Naomi Osaka at the WTA Canadian Open.

Naomi Osaka confidently moved through the third round of the WTA 1000 in Montreal. Just days after beginning a trial period with coach Tomasz Wiktorowski, the former world No. 1 found her rhythm against Jelena Ostapenko on Friday.

Two-time reigning champion Jessica Pegula of the United States is out in the third round after falling to Latvia's Anastasija Sevastova 3-6, 6-4, 6-1 in a major upset Friday afternoon at the WTA 1000 tournament.