NEW YORK, NY, USA – Tennis fans say that the US Open hasn’t really began until a match ends after midnight. In that case, Madison Keys and Alison Riske have inaugurated the year’s last Grand Slam in style, recording the latest finish ever in a women’s match.

“I’m feeling pretty good. I just looked up, and it’s almost 2 a.m.,” Keys joked after the match. “Who wants to go party?

“My party will probably be a protein shake and then going to sleep, but you guys can go out and celebrate for me!”

Earlier in the night, Keys didn’t have much reason to celebrate just yet. Her match was the last one on Arthur Ashe Stadium after a dramatic Opening Ceremony celebration and a men’s match delayed her start time. Riske and Keys took to the court around 11:20 p.m., and shortly afterwards Keys dropped a tight opening set.

But as the clock flew past the midnight mark, Keys’ best tennis came together, rallying to a 4-6, 7-6(5), 6-2 victory. The match ended at 1:48 a.m., the latest finish for a women’s match in US Open recorded history. The previous record was 1:35 a.m., when Samantha Stosur defeated Elena Dementieva in the fourth round back in 2010.

“I didn’t know I could play such great tennis after 1 a.m.,” Keys said. “But it had to be after 1 a.m., where I started playing a little bit better, so I think that was the key.

“I’m not usually a morning person, but this kind of morning, I am. 6 a.m., 7 a.m. is tougher.”

And as for Riske?

that was the most fun Ive ever had past 10pm- mostly because Im usually asleep by then. Thanks @usopen !!!?

— Alison Riske (@Riske4rewards) August 30, 2016