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Rei SakamotoPhoto: Hameltion, CC BY-SA 4.0, via Wikimedia Commons (cropped)

TennisATPRight-handed

Rei Sakamoto

JapanAge, ranking and results

Rei Sakamoto is a tennis player on the ATP Tour who reached a career-high ATP Tour ranking of No. 123 on November 2, 2026.

13 ATP Tour matches

Updated

ATP rankingNo. 122477 pts2026 record4-7Career highNo. 123Nov 2, 2026Agatha's record5-27 graded calls since Oct 1, 2026

About Rei Sakamoto

Born on June 24, 2006, in Nagoya, Japan, Rei Sakamoto plays on the ATP Tour and hits right-handed with a two-handed backhand. Federico Ricci is his coach. On November 2, 2026, Sakamoto reached a career-high ATP Tour ranking of No. 123.

Agatha Research DeskUpdated Nov 9, 2026

Match history13

Every ATP Tour, Grand Slam and Olympic main-draw match in our records, newest first. A walkover is listed but never counted in a record.

2026: 18-12

DateTournamentRoundOpponentResultScoreSurface
Oct 20Almaty OpenRound 1Karen KhachanovL2-6, 4-6Hard
Oct 18Almaty OpenQualifying FinalGabriel DialloW2-6, 6-4, 6-4Hard
Oct 17Almaty OpenQualifying 1st RoundAmir OmarkhanovW6-2, 6-1Hard
Oct 11Shanghai MastersRound 3Alex de MinaurL6-7(6), 4-6Hard
Oct 9Shanghai MastersRound 2Andrey RublevW6-4, 6-4Hard
Oct 7Shanghai MastersRound 1Marco TrungellitiW6-3, 7-5Hard
Oct 6Shanghai MastersQualifying FinalKyrian JacquetW7-6(6), 4-6, 7-6(8)Hard
Oct 5Shanghai MastersQualifying 1st RoundSeongChan HongW6-3, 7-5Hard
Sep 30Japan OpenRound 1Matteo ArnaldiL6-2, 4-6, 4-6Hard
Sep 2US OpenRound 2Frances TiafoeL3-6, 6-7(2), 5-7Hard
Aug 31US OpenRound 1Aleksandar VukicW6-4, 6-7(5), 6-4, 3-6, 6-4Hard
Aug 28US OpenQualifying FinalKei NishikoriW6-4, 7-6(3)Hard
Show 18 more
Aug 26US OpenQualifying 2nd RoundAlexandre MullerW6-3, 6-3Hard
Aug 24US OpenQualifying 1st RoundJay ClarkeW4-6, 6-3, 6-4Hard
Jun 25WimbledonQualifying FinalJaime FariaL6-7(3), 6-4, 3-6, 4-6Grass
Jun 24WimbledonQualifying 2nd RoundAziz DougazW6-4, 6-4Grass
Jun 22WimbledonQualifying 1st RoundAnton MatusevichW7-6(6), 3-6, 6-3Grass
May 19Roland GarrosQualifying 1st RoundPedro MartinezL2-6, 5-7Clay
Apr 21Madrid OpenQualifying FinalVilius GaubasL6-7(5), 7-6(5), 6-7(4)Clay
Apr 20Madrid OpenQualifying 1st RoundZachary SvajdaW7-6(9), 6-1Clay
Mar 30Grand Prix Hassan IIQualifying FinalMarco TrungellitiL6-7(8), 4-6Clay
Mar 29Grand Prix Hassan IIQualifying 1st RoundAmine JamjiW6-4, 6-2Clay
Mar 21Miami OpenRound 2Daniil MedvedevL7-6(10), 3-6, 1-6Hard
Mar 20Miami OpenRound 1Aleksandar KovacevicW6-4, 3-6, 7-6(7)Hard
Mar 2Indian WellsQualifying 1st RoundVit KoprivaL4-6, 6-7(6)Hard
Jan 20Australian OpenRound 1Rafael JodarL6-7(6), 1-6, 7-5, 6-4, 3-6Hard
Jan 14Australian OpenQualifying FinalGiulio ZeppieriW6-2, 6-2Hard
Jan 13Australian OpenQualifying 2nd RoundColton SmithW6-4, 6-4Hard
Jan 11Australian OpenQualifying 1st RoundDaniel EvansW6-1, 6-2Hard
Jan 6Bank of China Hong Kong Tennis OpenRound 1Lorenzo SonegoL2-6, 6-7(4)Hard

How he is doing nowThrough Oct 20

ATP rankingNo. 122477 points, ESPN, Nov 5
2026 record4-7hard 4-7
Last 106-4LWWLWWWWLLNewest first. Lost his last match.

Agatha on Rei Sakamoto

Every graded call Agatha sealed on his matches since Oct 1, 2026, newest first. Each is 1 unit at its sealed price; the number opens its receipt.

Record5-2Units+0.37u7 graded calls
DateMatchCallPriceResultUnitsReceipt
Oct 20vs Karen KhachanovPREDKaren Khachanov to win-263WON+0.38u#1408
Oct 17vs Gabriel DialloLEANRei Sakamoto to win-118WON+0.85u#1288
Oct 10vs Alex de MinaurPREDAlex de Minaur to win-250WON+0.40u#768
Oct 8vs Andrey RublevPREDAndrey Rublev to win-260LOST-1.00u#579
Oct 6vs Marco TrungellitiLEANRei Sakamoto to win-210WON+0.48u#440
Oct 5vs Kyrian JacquetPREDKyrian Jacquet to win-142LOST-1.00u#389
Oct 4vs SeongChan HongPREDRei Sakamoto to win-370WON+0.27u#328

Career

  1. 2025First ATP matchLost to Alexandre Muller, Miami Open
  2. 2026Career high No. 123Nov 2, 2026
  3. Oct 20, 2026Latest matchLost to Karen Khachanov, Almaty Open

Grand Slam titles

AO0Round 1 (2026)0-1 in our records
RG0-
WIM0-
USO0Round 2 (2026)1-1 in our records

First ATP match

Mar 19, 2025: lost to Alexandre Muller 4-6, 4-6Miami Open, on hard

Latest match

Oct 20, 2026: lost to Karen Khachanov 2-6, 4-6Almaty Open, Round 1, on hard court

Challenger and ITF finals

Challenger: 3 singles finals, 3 won. ITF: 2 doubles finals, 1 won. From 2024 to 2025.

Singles

  1. W
    Nov 2025Won the title at Yokohama Challenger, Japan (hard), beating Kaichi Uchida 4-6, 7-6(7-4), 6-4.
  2. W
    Jun 2025Won the title at Cary Tennis Classic, US (hard), beating Liam Draxl 6-1, 6-4.
  3. W
    Nov 2024Won the title at Yokkaichi Challenger, Japan (hard), beating Christoph Negritu 1-6, 6-3, 6-4.

Doubles

  1. L
    May 2024Runner-up at M15 Cervia, Italy (clay) with Federico Bondioli: a walkover to Gianluca Cadenasso and Jacopo Bilardo.
  2. W
    Feb 2024Won the title at M15 Sharm El Sheikh, Egypt (hard) with Jan Hrazdil, beating Emile Hudd and David Stevenson 6-3, 6-7(8-10), [11-9].

Most often against

The players he has met most in our records, with the head-to-head.

Aleksandar Vukic2 meetings
1-1All square

Last: Aug 31, 2026, US Open Round 1, won

Alexandre Muller2 meetings
1-1All square

Last: Aug 26, 2026, US Open Qualifying 2nd Round, won

Marco Trungelliti2 meetings
1-1All square

Last: Oct 7, 2026, Shanghai Masters Round 1, won

Matteo Arnaldi2 meetings
0-2Sakamoto trails

Last: Sep 30, 2026, Japan Open Round 1, lost

Vit Kopriva2 meetings
0-2Sakamoto trails

Last: Mar 2, 2026, BNP Paribas Open Qualifying 1st Round, lost

Sources and updates

Results and schedules come from Agatha's own records of the ATP Tour. The ATP ranking is ESPN's, as of Nov 5, 2026.

Updated Nov 9, 2026, 7:00 AM ET. Results and form refresh after every match; biography facts are checked weekly.