Game, set, mangia!

US Open stars are loading up on the carbs before their matches at a tony Midtown Italian joint — where they dine near each other at night before trying to take one another down in Flushing.

“Jannik Sinner, he like the pasta with the bolognese sauce,” said Gustavo Hodzic, a co-owner of the hot spot Osteria Delbianco, to The Post on Tuesday, referring to the 24-year-old tennis sensation from Italy.

The East 49th Street eatery is so popular with Open aces that No.1-ranked Sinner and his 22-year-old court rival, No. 2 star Carlos Alcaraz of Spain, showed up to dinner there on the same night last week.

“We run into each other. Just was a coincidence,” Alcaraz later told reporters of the pair’s chance encounter Thursday around 9 p.m. “It is a good restaurant.” 5

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