French Open and Wimbledon champion Carlos Alcaraz of Spain failed to reach the Paris Masters quarterfinals after a thrilling defeat to local favorite Ugo Humbert 6-1, 3-6, 7-5 on Thursday.

The Frenchman, ranked 18th in the world, wrapped up the first set in 26 minutes as Alcaraz struggled to find his rhythm. Spain's world No. 2 refused to go quietly and took a 5-2 lead before closing out the second set with a hold to love.

However, Humbert, buoyed by the home crowd, managed to overpower Alcaraz in the third set and become the first Frenchman to beat a top-five player at the Paris tournament since 2019 when his coach Jeremy Chardy downed Daniil Medvedev in the second round.

Earlier, third-seeded Alexander Zverev of Germany defeated 20th-ranked Frenchman Arthur Fils 6-4, 3-6, 6-3 after recovering from a second-set wobble.

No. 9 seed Alex de Minaur of Australia also managed to come from behind to beat Britain's Jack Draper 5-7, 6-2, 6-3. His compatriot Jordan Thompson also reached the last eight with a 7-5, 7-6(5) victory over Frenchman Adrian Mannarino. Nonetheless, Australia's Alexei Popyrin failed to join his countrymen as he fell to Russian Karen Khachanov 7-6(5), 6-4.

Holger Rune struggled against French lucky loser Arthur Cazaux, who had replaced world No. 1 Jannik Sinner of Italy after he pulled out with a virus. However, Danish 13th seed Rune recovered from a set down to win 3-6, 6-3, 6-4.