This is Nadal's earliest exit at any Grand Slam tournament since bowing out in the first round in Melbourne in 2016 against No. 45 Fernando Verdasco. That also made Verdasco the lowest-ranked player to defeat Nadal in Australia — until, of course, McDonald on Wednesday.
McDonald has never been past the fourth round at a major tournament. In his lone previous matchup against Nadal, at the 2020 French Open, McDonald won a total of just four games in a lopsided loss.
"He kicked my butt," McDonald recalled Wednesday.
This result overshadowed everything else going on in Melbourne, of course, on a day that persistent rain pushed back the start of play on all but the three courts with retractable roofs until after 5 p.m. local time.
That meant some players — most notably, No. 1 Iga Swiatek, No. 3 Jessica Pegula and No. 6 Maria Sakkari — won matches that put them in the third round before more than a dozen others even had contested a single point in the first round.
At night, 2022 French Open runner-up
Coco Gauff got past 2021 U.S. Open champion Emma Raducanu 6-3, 7-6 (4) in a second-round meeting between two of the sports young stars.
"I know a lot of people were looking forward to that matchup," said Gauff, an 18-year-old American. "I'm glad we got the prime spot. I hope we delivered."
Seeded men who won included No. 3 Stefanos Tsitsipas, No. 6 Felix Auger-Aliassime, No. 7 Daniil Medvedev — the runner-up to Nadal last year and to Novak Djokovic in 2021 — No. 15 Jannik Sinner and No. 16 Frances Tiafoe.
"I told him, ‘You're going to be in a position to win today. You can win today," Tiafoe said about fellow American McDonald. "Sort of seeing how he feels, I'm happy for Mackie. 'GOAT wins' don't come easy. Something to tell his grandkids one day, and you have to be happy for that guy."
A year ago, Nadal won the Australian Open for the second time to earn his 21st major championship, then raised his total to 22 — the most for a man — at Roland Garros.