Greece’s two major tennis players have secured their spots in round three of the US Open.

Day three of the Open saw Stefanos Tsitsipas take out American Maxime Cressy in a straight-sets win.

The No. 4 was not given an easy win as Cressy dealt out some hard serves, 21 of them aces.

Tsitsipas said his opponent’s game play was tricky to get used to in a post match interview.

“His game is very difficult to read. He has a very good serve-and-volley game. You don’t get to play against those players very often. You have to adjust,” he said.

In the end the 22-year-old prevailed 7-6, 6-3, 6-4 and will make his way to round three of the US Open in his career.

Tsitsipas will play Croatian Boran Coric on Saturday.

Stefanos Tsitsipas returns a shot to Maxime Cressyuring the second round of the U.S. Open Photo: AP/Frank Franklin II

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On day four of the tournament, No. 15 Maria Sakkari beat out unseeded Croatian-born American Bernarda Pera.

The game started off rocky for the 25-year-old, as Pera commanded the court in the first set ending on a 2-6 win.

Sakkari finally got a feel for Pera and brought her A-Game with her powerful back court play.

The Greek won 2-6, 6-3, 6-2, finishing off the game with an ace to seal the win.

Sakkari will be going up against American No. 22 Amanda Anisimova on Sunday.