Australian Open 2025 Results: Winners, Losers and Highlights from Tuesday's Bracket
The biggest upset of the 2025 Australian Open took place on Tuesday morning.
Brazilian Joao Fonseca took down No. 9 seed Andrey Rublev in straight sets.
Rublev's loss was the first defeat suffered without an injury by a top-10 seed in the men's and women's singles draw. Men's No. 10 seed Grigor Dimitrov withdrew in the first round due to an injury.
Fonseca earned the only massive upset on Tuesday, but there were a few other close calls in the men's draw.
No. 5 seed Daniil Medvedev lost two sets and No. 13 seed Holger Rune was also taken to five sets.
There was far less chaos on the women's side, where Emma Navarro became the fourth American top-10 seed to cruise into the second round.
Men's Results
No. 4 Taylor Fritz def. Jenson Brooksby, 6-2, 6-0, 6-3
No. 5 Daniil Medvedev def. Kasidit Samrej, 6-2, 4-6, 3-6, 6-1, 6-2
No. 8 Alex De Minaur def. Botic Van de Zandschulp, 6-1, 7-5, 6-4
Joao Fonseca def. No. 9 Andrey Rublev, 7-6 (1), 6-3, 7-6 (5)
No. 13 Holger Rune def. Zhang Zhizhen, 4-6, 6-3, 6-4, 3-6, 6-4
No. 16 Lorenzo Musetti def. Matteo Arnaldi, 7-6 (4), 4-6, 7-6 (5), 6-3
No. 18 Hubert Hurkacz def. Tallon Griekspoor, 7-5, 6-4, 6-4
No. 19 Karen Khachanov def. Adrian Mannarino, 7-6 (5), 6-3, 6-3
No. 21 Ben Shelton def. Brandon Nakashima, 7-6 (3), 7-5, 7-5
Corentin Moutet def. No. 25 Alexei Popyrin, 4-6, 6-3, 6-4, 6-4
Gael Monfils def. No. 30 Giovanni Mpeshi Perricard, 7-6 (7), 6-3, 6-7 (6), 6-7 (5), 6-4
No. 31 Francisco Cerundolo def. Alexander Bublik, 7-6 (1), 6-3, 6-2
Tomas Etcheverry def. No. 32 Flavio Cobolli, 6-7 (8), 6-3, 7-5, 6-1
Tuesday had the potential to be one of the most upset-laden first-round days in Australian Open history.
Andrey Rublev was the only marquee player who went down, but Daniil Medvedev and Holger Rune were both unexpectedly taken to five sets.
Rublev fell in straight sets to 18-year-old Brazilian Joao Fonseca. It was Fonseca's first win in a Grand Slam main draw.
The loss was stunning compared to Rublev's recent history in Melbourne. He reached the quarterfinals in three of the last four years.
However, the result also aligned with a recent trend of poor major results for the No. 9 seed, who was bounced in the third round of the French Open, opening round at Wimbledon and fourth round at the U.S. Open.
Two Americans, Taylor Fritz and Frances Tiafoe, are in Rublev's quarter, which also contains Medvedev.
Medvedev almost went down to unseeded player Kasidit Samrej, but he rallied to win in five sets.
A Medvedev first-round loss would have been even more stunning since he reached the final in three of the last four years in Melbourne.
Rublev is now out of Medvedev's way in the draw, but the weaknesses he showed on Tuesday may make it easier for Tiafoe or Fritz to beat him.
Rune held on in five sets as well, but if he lost it would not have been as stunning. The No. 13 seed did not make it past the fourth round in a major last season and might not last past the first week in Melbourne with top seed Jannik Sinner in his part of the draw.
Women's Results
No. 4 Jasmine Paolini def. Wei Sijia, 6-0, 6-4
No. 6 Elena Rybakina def. Emerson Jones, 6-1, 6-1
No. 8 Emma Navarro def. Peyton Stearns, 6-7 (5), 7-6 (5), 7-5
No. 9 Daria Kasatkina def. Viktoriya Tomova, 6-1, 6-3
No. 15 Beatriz Haddad Maia def. Julia Riera, 4-6, 7-5, 6-2
No. 19 Madison Keys def. Ann Li, 6-4, 7-5
No. 22 Katie Boulter def. Rebecca Marino, 6-4, 3-6, 7-5
No. 24 Yulia Putintseva def. Elina Avanesyan, 4-6, 7-5, 6-2
Emma Raducanu def. No. 26 Ekaterina Alexandrova, 7-6 (4), 7-6 (2)
Camila Osorio def. No. 31 Maria Sakkari, 6-4, 6-7 (4), 6-4
No. 32 Dayana Yastremska def. Mayar Sherif, 6-1, 6-4
While chaos almost erupted in the men's draw, it was business as usual for the top seeds in the women's draw.
Emma Navarro became the fourth American top-10 seed to advance to the second round with a three-set win over fellow American Peyton Stearns.
Navarro has arguably the toughest draw of any of the top-ranked Americans since she could play three-time Grand Slam finalist Ons Jabeur in the third round.
Jasmine Paolini, Elena Rybakina and Daria Kasatkina all won in straight sets to keep the perfect record in tact for top-10 seeds in the women's draw.
All of the top 10 seeds who won on Tuesday reside in the bottom half of the draw with No. 2 seed Iga Swiatek.
American Madison Keys is also one to watch in the bottom half of the draw. The No. 19 seed won in straight sets on Tuesday and was a semifinalist in Melbourne in 2022. Keys has four hard-court semifinals on her Grand Slam resume.