TORONTO (AP) – Stefanos Tsitsipas celebrated his 23rd birthday Thursday by defeating Karen Khachanov 6-2, 6-3 to advance to the quarterfinals of the National Open Bank.

The audience served Grease’s No. 3 seed with a performance of “Happy Birthday”, as they were presented with a white cake topped with fresh fruit.

“One of the best sensations you get on the tennis court,” said Tsitsipas, who is third and lost the Roland Garros final to Novak Djokovic in five sets.

Tsitsipas dominated his Russian opponent, saved his break point and won 74% of his service points.

He will face sixth-seeded Norwegian Kasper Rood in the quarter-finals on Friday. They met in May at the Madrid Open, which Roode won in straight sets in the round of 16.

“I’m looking for a change, I’m looking for a change this time,” Tsitsipas said.

Rudd defeated Dusan Lajovic of Serbia 6-4, 6-3.

Russian seed Daniil Medvedev defeated James Duckworth of Australia 6-2, 6-4 in the night’s game. Medvedev will face the winner of the final match between seventh-seeded pole Hubert Herkaz and Georgian Nikoloz Basilashvili.

American John Isner, seeded fourth, defeated Russian Andre Rublev 7-5, 7-6 (5). Isner will face eleventh-seeded Frenchman Gael Monfils, who will win 6-1, 7-6(2) against American Frances Tiafoe.

American Reilly Opelka also took the lead by defeating Lloyd Harris of South Africa 4-6, 7-6(6), 7-6(4). Opelka will face 10th seed Roberto Bautista of Spain, who defeated eighth seed Diego Schwartzman of Argentina 6-3, 3-6, 7-5.

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