The US Open trophy sets Thiem apart from the rest of his generation. (Getty)

After four hours of play on Sunday and a comeback from two sets down, Dominic Thiem became the first man born in the 1990s to win a Grand Slam singles title—and the first new men's champion since Marin Cilic, in 2014. 

The US Open trophy sets Thiem apart from the rest of his generation, making him the preeminent star to still be in his 20s. So after he finished the  2-6, 4-6, 6-4, 6-3, 7-6 (6) win, Thiem received congratulations from figures throughout tennis.  

This included current stars ...

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Everyone is happy for @domithiem ???????? #USOpen

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Retired icons ... 

And his many fans: 

Thiem even got a shoutout from his favorite soccer team, Chelsea F.C.: 

Though he's propelled himself to a new level of fame with the major title, he's been putting himself in contention for such a win year after year. Come Roland Garros later this month, the only difference will be Thiem will arrive having already shown he can succeed at the highest level.