The future of tennis arrived Wednesday evening in Flushing Meadows in the form of Carlos Alcaraz vs. Jannik Sinner. Even after five hours, it hadn't overstayed its welcome.

Alcaraz, the 19-year-old Spaniard tabbed by many as the young player most likely to take over the sport after the age of the Big 3, defeated Sinner 6-3, 6-7, 6-7, 7-5, 6-3 to advance to his first career Grand Slam semifinal.

Along the way, the two young power hitters — Sinner is 21 years old — exchanged winners and lengthy rallies well into the night. The tennis was impossibly high level, with 119 winners combined. The match eventually ended at 2:50 a.m. ET, the latest ending to a match in US Open history, and lasted five hours and 15 minutes, the second-longest match in tournament history.