After failing to serve out the match in straight sets, No. 3 seed Stefanos Tsitsipas dug deep to fend off Ugo Humbert, 6-3, 6-7 (13), 6-1, in avenging his Tokyo Olympics defeat.
Bibi is back! The defending National Bank Open champion, seeded No. 2 this year, overcame qualifier Harriet Dart, 6-1, 3-6, 6-3, to begin her bid in Montréal.
World No. 2 Daniil Medvedev is now 3-0 against Alexander Bublik in 2021 after rallying past his good friend, 4-6, 6-3, 6-4, to launch his Toronto campaign.
The security team in Montréal got more than it bargained for when forced to chase after an unruly spectator during a rain delay.
Kateřina Siniaková ousted No. 5 seed Garbiñe Muguruza, 6-2, 0-6, 6-3, in the second round of the WTA 1000 event.