0–2(at ATP Tour level, Grand Slam level, and in Davis Cup)
Career titles
0
Highest ranking
No. 772 (5 May 2025)
Current ranking
No. 877 (17 November 2025)
Last updated on: 24 November 2025.
Rei Sakamoto (坂本怜,Sakamoto Rei; born 24 June 2006) is a Japanese professionaltennis player. He has a career-highATP singles ranking of world No. 159 achieved on 24 November 2025 and a doubles ranking of No. 772 achieved on 5 May 2025.[2] Sakamoto won the2024 Junior singles Australian Open title.[1] He is currently the No. 5 singles player from Japan.[3]
Sakamoto reached anITF junior combined ranking of world No. 1 on 27 May 2024.
Sakamoto won the 2024 Australian Openboys' singles title after defeatingJan Kumstát in three sets.[4][5] PartneringMaxim Mrva, he also won the boys' doubles at the2024 US Open, defeating Denis Peták and Flynn Thomas in the final.[6][1]
He received a wildcard for qualifying competition at the2024 Miami Open but lost toVít Kopřiva in the first round.[7]
At the age of 18 and five months, Sakamoto won his first title at the2024 Yokkaichi Challenger becoming the second youngest Japanese titlist afterKei Nishikori to lift an ATP Challenger trophy in history. As a result he reached the top 500 in the rankings on 2 December 2024.[8][9]
2025: Major qualifying, Masters and top 175 debuts
He won his second Challenger title at2025 Cary Tennis Classic and reached new career-high ranking of world No. 206 on 14 July 2025, rising 85 positions up in the singles rankings.[12][1]