Rei Sakamoto wins Yokohama Challenger | ATP Tour

The one who threw the challenge

Sakamoto, 19, is defending the Clew Challenger title at home

The Japanese teenager is among the deals against this week’s promotions

November 24, 2025

Japan’s Rei Sakamoto ended his season in style on Sunday as he claimed the ATP Challenger Tour title on home soil. The 19-year-old won the Yokohama Keio Challenger by Mita Kosan and became the first Japanese teenager to win three titles contested by impernese.

Seeded Second, Sakamoto was attacked from the bottom in his last three matches of the week. He battles his countryman Kaichi Uchida 4-6, 7-6 (4), 6-4 in a two-hour, 15-minute match.

“I had a lot of ups and downs this year, but he fought hard at the end,” Sakamoto said in an Instagram post reflecting on his 2025 season. “Appreciate all the support from everyone around me. I can’t wait for the offseason and what 2026 will bring us!!”

Rei Sakamoto made history in Japan 🇯🇵

The 19-year-old becomes the first Japanese teenager to win three challenging titles!#Atpchallenger pic.twitter.com/rymawwc9kg

– ATP Challenger Tour (@atpchallenger) November 23, 2025

SAMAMOTO, 10th in the PIF ATP Live Race to Jeddah, won two Challenger titles this year, with his previous victory coming in Cary, North Carolina.

The person who was No. 4 Kei Nishikori also competed in Yokohama, where he reached the quarter-finals before falling to Uchida. Nishikori was in action for the first time since Cincinnati opened.

Maestrelli Crowned Champion in Bergamo
Italian Francesco Maestrelli won the 20th Anniversary of the Internazionali di Bergamo, a tournament stars like Jannik Sorner, Holger Rune and Jack Draper have won before.

^{Francesco Maestrelli wins the Bergamo Challenger, which was celebrating its 20th anniversary. Credit: Antonio Milesi}

The 22-year-old Mastrelli defeated Jacob Mordo Topo 6-3, 3-6, 6-1 in the final and is now in the career High No. 138 in PIF standards atp.

Vallejo, 21, reaches a career high after the title of guayaquil
Adolfo Daniel Vallejo Paraguayan Adolfo Daniel Vallejo is also on a high following his recent victory. This 21-year-old man captured the Challenger Ciudad de Guayaquil, where he escaped Juan Pablo Varial 7-5, 6), 6-3 In two years of the second hour, a minute of 59 minutes. Vallejo is now gone. 143 in PIF standards atp.

^{Adolfo Daniel Vallejo in action at the Guayaquil Challenger. Credit: Challenger Ciudad de Guayaquil}

Heide wins at home in Brazil without dropping a set
Brazil’s Gustavo Heide holds the outstanding paper on home soil at the Engie Open in Florianopolis. The 23-year-old defended his second online crown and first of the season with a 6-2, 6-3 final victory over Argentine Andrea Carherini. Clecsenger’s first title came last year in Asuncion, where he beat Joao Fonseca’s countryman in the Championship game.

^{Gustavo Heide celebrates winning the Florianopolis Challenger. Credit: Luz Press Luiz Candido}

Duckworth binds the active title record at the infer level
James Duckworth lifted his Challenger trophy, tying Facundo Bagnis for most titles among active players at that level. Duckworth didn’t drop a set all week at the NSW open in Sydney, ending the tournament with a 6-1, 6-4 win against 20-year-old Hayato Matsuoka.

^{James Duckworth during the Sydney Challenger Final. Credit: Jake Lim / Tennis Australia}

Former world No. 1 Lyonyentton Hewitt came out of retirement in Sydney to team up with his 16-year-old son Cruz Hewitt in the doubles. Kleyton and Cruz won their opening round match before advancing to the Curte-Finals. Cruz also competed in the main draw and earned his second match win at that level.

KOOR captures the second title of 2025
Czech zdek kolar returns to the circuit winning for the second time this year. The 29-year-old won the III Challengenger Montemancion in Monteman, Spain, where he beat Gianluca Cadenasso 6-4, 6-4 in the Final.

Samuel, who was a college prospect, wins the Mel Clellanger Trophy
The former University of South of South Africa star Toby Samuel killed his youngest challenger for the crown in Soma Bay, Egypt. The 23-year-old Briton survived international Jay Clarke 4-6 7-6 (4) 6-0 in the final. Samuel is now career-high No. 329 in PIF ATP standards.