Roger Federer and Lin-Manuel Miranda tweeted at each other after Federer's U.S. Open win on Thursday.
But after Miranda shared a tweet about his nail-biting experience watching the decorated Swiss athlete during Thursday’s U.S. Open match against Russia’s Mikhail Youzhny, it became clear that the two celebrities are, at the very least, mutual fans.
“Just stressed, watching Federer,” Miranda tweeted with a picture of himself looking, indeed, stressed during the tense match between the top-seeded player and his opponent. Federer’s response? “Just you wait… Just you wait.” Hamilton fans will recognize that as a line from the musical, as rapped by the character Alexander Hamilton during the opening number when he’s establishing his upstart character — and setting the stage for his subsequent rise to power. Clearly, Federer has made time to check out Miranda’s show.
It was an apt choice of lyric, too: Federer, who’s chasing down a third Grand Slam title in one year, went on to win the match, as he’s done so many times before. (Federer might also have had an easier time because Youzhny was beset with serious cramping, making his play suffer.)
Miranda’s response? An updated photo wish some choice emojis placed on top of his (and his child’s) faces.
"Just you wait... Just you wait"— Roger Federer (@rogerfederer) September 1, 2017
The stress isn’t over, though. Federer next faces Spain’s Feliciano López on Saturday, Sept. 2.
This story was originally published on TIME.com.