Toronto – Stefanos Tsitsipas defeated his second seed in as many days at the Toronto Masters on Thursday, stunning Wimbledon champion Novak Djokovic 6-3, 6-7 (5/7), 6-3 to reach the quarter-finals.
The Greek teenager, who turns 20 on Sunday, followed up his defeat of seventh seed Dominic Thiem, beating four-time champion Djokovic, seeded ninth, in a first-time meeting.
The youngster, ranked 27, spent just over two hours in advancing to the first Masters 1000 quarter-final of his career.
Results from the ATP Toronto Masters tournament on Thursday (x denotes seeding):
Grigor Dimitrov (BUL x5) bt Frances Tiafoe (USA) 7-6 (7/1), 3-6, 7-6 (7/4)
Kevin Anderson (RSA x4) bt Ilya Ivashka (BLR) 7-5, 6-3
Stefanos Tsitsipas (GRE) bt Novak Djokovic (SRB x9) 6-3, 6-7 (5/7), 6-3