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Portrait of Rei Sakamoto, tennis player
Player research cockpit

ReiSakamoto

TennisJack analysis

Rei Sakamoto currently has a large TennisJack sample of 73 completed matches, with a 58.9% win rate in the loaded match history. The recent form line is 6-4 across the latest 10 completed matches.

Latest rank #124
M
Matches73Completed matches
%
Win rate58.9%Across all matches
F
Latest form6-4In latest 10 matches
I
Index statusStrong candidateProfile confidence
Performance metrics
Hold Base82.2%
Break Pressure21.7%
Latest form (10 matches)
6-4
L W L W W W L W W L
Surface profile
Hardcourt outdoor
Canonical/players/rei-sakamoto/
Index statusStrong candidate
Last updatedData from TennisJack
Profile intelligence

Ten signals worth watching.

Built from 73 completed TennisJack matches: form, surface, odds, pressure and close-set behavior. The full match log stays below for audit.

01

Player DNA

Quick fingerprint from starts, service base, return bite and decider exposure.

Balanced starts Break-heavy player Stable server
Set 1 punch50.7%
Service shield82.2%
Return bite21.7%
Decider risk32.9%
02

Favorite / Underdog Split

How the player behaves when priced as market favorite versus outsider.

Favorite 79.3% 23-6 - 29 matches Avg odds 1.38 | 1+ set 79.3%
Underdog 25.0% 3-9 - 12 matches Avg odds 3.27 | 1+ set 50.0%
03

First Set Personality

Shows whether the player starts cleanly, breaks first, or survives early pressure.

Set 1 win50.7%
Breaks first S155.4%
Broken first S144.6%
Recovers S18.0%
04

Break Pressure Profile

Return damage versus service leakage, built from set-level break counters.

Avg breaks2.10
Avg broken1.71
Balance0.38
Clean service matches31.5%
3+ breaks produced35.6%
Set 2 win57.5%
05

Clean Win / Comeback Index

Separates smooth 2-0 wins from matches where the player had to repair damage.

53.5%Clean 2-0 share among wins
Clean 2-0 wins23
Comeback signals38
Lost set 1, won match9
Comeback index52.1%
06

Surface Edge

Where the profile is most trustworthy and where the win rate really travels.

Primary surfaceHardcourt outdoor
Primary record30-18
Primary WR62.5%
Best surfaceHardcourt outdoor 62.5%
Hardcourt outdoor30-1862.5%
Clay9-660.0%
Hardcourt indoor2-433.3%
Grass2-250.0%
07

Odds Value Pulse

Shows whether the player wins as expected or creates value at outsider prices.

Avg win odds1.50
Avg loss odds2.69
Biggest win odds3.00
2.00+ odds WR20.0%
2.00+ sample10
Odds sample41
08

Decider Profile

How often matches become complicated, and whether the player survives the third set.

Three-set share32.9%
Decider record15-9
Set 3 win66.7%
After losing S125.0%
09

Close Set Risk

Tie-break and 7-5 / 7-6 pressure profile, useful for spotting fragile edges.

Close sets57-45
Close-set WR55.9%
Tie-breaks17-22
Matches with tight set62
10

Momentum Trend

Compares the latest 5 matches with the previous 10 so form shifts are visible immediately.

Stable form · 1 losses running
L W L W W W L W W L
Latest 5 WR60.0%
Previous 10 WR70.0%
Latest 53-2
Previous 107-3
Trend delta-10.0%
Latest 5 WR60.0%
Match log

All Rei Sakamoto matches in the TennisJack sample.

Scan date, tournament, surface, opponent, set score, result and service-return indicators before opening the deeper tools.

Open Player Research
DateMatchScoreResultHold / Break
20.10.2026R32 Rei Sakamoto vs Karen KhachanovATP Almaty 2-6 4-6Hardcourt indoor Loss
Hold
66.7%
Break
0.0%
18.10.2026Round 19 Rei Sakamoto vs Gabriel DialloATP Almaty 2-6 6-4 6-4Hardcourt indoor Win
Hold
85.7%
Break
14.3%
17.10.2026Round 14 Rei Sakamoto vs Amir OmarkhanovATP Almaty 6-2 6-1Hardcourt indoor Win
Hold
100.0%
Break
62.5%
08.09.2026R32 Rei Sakamoto vs Ji Sung NamChallenger Shanghai 6-7 4-6Hardcourt outdoor Loss
Hold
72.7%
Break
16.7%
31.08.2026R128 Rei Sakamoto vs Aleksandar VukicUS Open 6-4 6-7 6-4 3-6 6-4Hardcourt outdoor Win
Hold
-
Break
-
28.08.2026Round 19 Rei Sakamoto vs Kei NishikoriUS Open 6-4 7-6Hardcourt outdoor Win
Hold
90.9%
Break
16.7%
26.08.2026Round 15 Rei Sakamoto vs Alexandre MullerUS Open 6-3 6-3Hardcourt outdoor Win
Hold
100.0%
Break
33.3%
20.08.2026R16 Rei Sakamoto vs Luca Van AsscheChallenger Quebec City 6-4 4-6 6-7Hardcourt outdoor Loss
Hold
75.0%
Break
23.5%
18.08.2026R32 Rei Sakamoto vs Jurij RodionovChallenger Quebec City 6-1 6-4Hardcourt outdoor Win
Hold
100.0%
Break
37.5%
14.08.2026QF Rei Sakamoto vs Daniel MilavskyChallenger Brownsburg 3-6 3-6Hardcourt outdoor Loss
Hold
75.0%
Break
0.0%
13.08.2026R16 Rei Sakamoto vs Dhakshineswar SureshChallenger Brownsburg 7-5 6-3Hardcourt outdoor Win
Hold
100.0%
Break
20.0%
12.08.2026R32 Rei Sakamoto vs Ugo BlanchetChallenger Brownsburg 6-7 7-6 7-6Hardcourt outdoor Win
Hold
88.9%
Break
10.0%
07.08.2026QF Rei Sakamoto vs Edas ButvilasChallenger Lexington 6-7 6-3 5-7Hardcourt outdoor Loss
Hold
76.5%
Break
23.5%
06.08.2026R16 Rei Sakamoto vs Michael MmohChallenger Lexington 6-4 6-4Hardcourt outdoor Win
Hold
80.0%
Break
40.0%
04.08.2026R32 Rei Sakamoto vs Aidan MayoChallenger Lexington 7-6 7-5Hardcourt outdoor Win
Hold
91.7%
Break
15.4%
02.07.2026R16 Rei Sakamoto vs Timo LegoutChallenger Cary 4-6 3-6Hardcourt outdoor Loss
Hold
70.0%
Break
0.0%
30.06.2026R32 Rei Sakamoto vs Jules LerouxChallenger Cary 6-3 6-7 6-2Hardcourt outdoor Win
Hold
92.9%
Break
31.2%
25.06.2026Round 19 Rei Sakamoto vs Jaime FariaWimbledon 6-7 6-4 3-6 4-6Grass Loss
Hold
-
Break
-
24.06.2026Round 15 Rei Sakamoto vs Mohamed Aziz DougazWimbledon 6-4 6-4Grass Win
Hold
100.0%
Break
20.0%
22.06.2026Round 14 Rei Sakamoto vs Anton MatusevichWimbledon 7-6 3-6 6-3Grass Win
Hold
93.3%
Break
6.2%
14.06.2026R32 Rei Sakamoto vs Yibing WuChallenger Nottingham 5-7 1-6Grass Loss
Hold
55.6%
Break
10.0%
19.05.2026Round 14 Rei Sakamoto vs Pedro MartinezFrench Open 2-6 5-7Clay Loss
Hold
30.0%
Break
44.4%
14.05.2026R16 Rei Sakamoto vs Alex MolcanChallenger Bordeaux 4-6 0-6Clay Loss
Hold
50.0%
Break
0.0%
13.05.2026R32 Rei Sakamoto vs Alexandre MullerChallenger Bordeaux 6-4 3-6 6-3Clay Win
Hold
92.9%
Break
14.3%
12.05.2026Round 19 Rei Sakamoto vs Chun Hsin TsengChallenger Bordeaux 7-5 6-1Clay Win
Hold
77.8%
Break
55.6%
11.05.2026Round 14 Rei Sakamoto vs Matteo MartineauChallenger Bordeaux 6-7 6-2 7-6Clay Win
Hold
81.2%
Break
27.8%
28.04.2026Round 19 Rei Sakamoto vs Ryan SeggermanChallenger Cagliari 7-5 6-7 7-6Clay Win
Hold
94.4%
Break
10.0%
27.04.2026Round 14 Rei Sakamoto vs Nicola PorcuChallenger Cagliari 6-2 7-6Clay Win
Hold
60.0%
Break
54.5%
21.04.2026Round 19 Rei Sakamoto vs Vilius GaubasATP Madrid 6-7 7-6 6-7Clay Loss
Hold
100.0%
Break
0.0%
20.04.2026Round 14 Rei Sakamoto vs Zachary SvajdaATP Madrid 7-6 6-1Clay Win
Hold
100.0%
Break
20.0%
16.04.2026R16 Rei Sakamoto vs Henrique RochaChallenger Oeiras 6-7 6-7Clay Loss
Hold
83.3%
Break
14.3%
14.04.2026R32 Rei Sakamoto vs Alejandro Moro CanasChallenger Oeiras 6-4 6-4Clay Win
Hold
70.0%
Break
44.4%
08.04.2026R16 Rei Sakamoto vs Luca Van AsscheChallenger Monza 3-6 5-7Clay Loss
Hold
63.6%
Break
10.0%
06.04.2026R32 Rei Sakamoto vs Roberto Carballes BaenaChallenger Monza 6-4 6-3Clay Win
Hold
100.0%
Break
30.0%
30.03.2026Round 19 Rei Sakamoto vs Marco TrungellitiATP Marrakech 6-7 4-6Clay Loss
Hold
81.8%
Break
8.3%
29.03.2026Round 14 Rei Sakamoto vs Amine JamjiATP Marrakech 6-4 6-2Clay Win
Hold
88.9%
Break
44.4%
21.03.2026R64 Rei Sakamoto vs Daniil MedvedevATP Miami 7-6 3-6 1-6Hardcourt outdoor Loss
Hold
-
Break
-
20.03.2026R128 Rei Sakamoto vs Aleksandar KovacevicATP Miami 6-4 3-6 7-6Hardcourt outdoor Win
Hold
93.3%
Break
5.9%
10.03.2026Round 19 Rei Sakamoto vs Luca Van AsscheChallenger Cap Cana 6-7 3-6Hardcourt outdoor Loss
Hold
80.0%
Break
8.3%
10.03.2026Round 14 Rei Sakamoto vs Liam DraxlChallenger Cap Cana 6-3 7-5Hardcourt outdoor Win
Hold
90.9%
Break
30.0%
03.03.2026Round 14 Rei Sakamoto vs Vit KoprivaATP Indian Wells 4-6 6-7Hardcourt outdoor Loss
Hold
90.9%
Break
0.0%
21.02.2026SF Rei Sakamoto vs Oliver CrawfordChallenger New Delhi 4-6 3-6Hardcourt outdoor Loss
Hold
77.8%
Break
0.0%
20.02.2026QF Rei Sakamoto vs Federico CinaChallenger New Delhi 6-7 6-3 6-2Hardcourt outdoor Win
Hold
86.7%
Break
33.3%
19.02.2026R16 Rei Sakamoto vs Alastair GrayChallenger New Delhi 1-6 6-1 6-4Hardcourt outdoor Win
Hold
75.0%
Break
33.3%
17.02.2026R32 Rei Sakamoto vs Frederico Ferreira SilvaChallenger New Delhi 6-2 6-2Hardcourt outdoor Win
Hold
87.5%
Break
62.5%
14.02.2026SF Rei Sakamoto vs Zhizhen ZhangChallenger Brisbane 1-6 4-6Hardcourt outdoor Loss
Hold
-
Break
-
13.02.2026QF Rei Sakamoto vs Li TuChallenger Brisbane 7-6 6-4Hardcourt outdoor Win
Hold
81.8%
Break
25.0%
12.02.2026R16 Rei Sakamoto vs Colin SinclairChallenger Brisbane 7-5 6-3Hardcourt outdoor Win
Hold
100.0%
Break
20.0%
10.02.2026R32 Rei Sakamoto vs Yuki MochizukiChallenger Brisbane 6-0 6-1Hardcourt outdoor Win
Hold
100.0%
Break
85.7%
06.02.2026QF Rei Sakamoto vs Tristan SchoolkateChallenger Brisbane 3-6 4-6Hardcourt outdoor Loss
Hold
77.8%
Break
0.0%
04.02.2026R16 Rei Sakamoto vs Taro DanielChallenger Brisbane 7-6 6-2Hardcourt outdoor Win
Hold
-
Break
-
02.02.2026R32 Rei Sakamoto vs Philip SekulicChallenger Brisbane 6-3 6-4Hardcourt outdoor Win
Hold
100.0%
Break
22.2%
20.01.2026R128 Rei Sakamoto vs Rafael JodarAustralian Open 6-7 1-6 7-5 6-4 3-6Hardcourt outdoor Loss
Hold
-
Break
-
15.01.2026Round 19 Rei Sakamoto vs Giulio ZeppieriAustralian Open 6-2 6-2Hardcourt outdoor Win
Hold
100.0%
Break
50.0%
14.01.2026Round 15 Rei Sakamoto vs Colton SmithAustralian Open 6-4 6-4Hardcourt outdoor Win
Hold
-
Break
-
12.01.2026Round 14 Rei Sakamoto vs Daniel EvansAustralian Open 6-1 6-2Hardcourt outdoor Win
Hold
-
Break
-
06.01.2026R32 Rei Sakamoto vs Lorenzo SonegoATP Hong Kong 2-6 6-7Hardcourt outdoor Loss
Hold
70.0%
Break
9.1%
23.11.2025Final Rei Sakamoto vs Kaichi UchidaChallenger Yokohama 4-6 7-6 6-4Hardcourt outdoor Win
Hold
86.7%
Break
11.8%
22.11.2025SF Rei Sakamoto vs Akira SantillanChallenger Yokohama 3-6 6-1 6-3Hardcourt outdoor Win
Hold
75.0%
Break
46.1%
21.11.2025QF Rei Sakamoto vs Yasutaka UchiyamaChallenger Yokohama 3-6 6-3 6-4Hardcourt outdoor Win
Hold
85.7%
Break
21.4%
19.11.2025R16 Rei Sakamoto vs Maxim ZhukovChallenger Yokohama 6-1 6-2Hardcourt outdoor Win
Hold
-
Break
-
18.11.2025R32 Rei Sakamoto vs Kasidit SamrejChallenger Yokohama 6-4 7-6Hardcourt outdoor Win
Hold
90.9%
Break
16.7%
14.11.2025QF Rei Sakamoto vs Chun Hsin TsengChallenger Kobe 6-4 1-6 6-7Hardcourt indoor Loss
Hold
78.6%
Break
12.5%
20.10.2025R32 Rei Sakamoto vs Mae MaligeChallenger Brest 5-7 1-6Hardcourt indoor Loss
Hold
66.7%
Break
0.0%
11.10.2025Round 14 Rei Sakamoto vs Mark LajalATP Stockholm 1-6 4-6Hardcourt indoor Loss
Hold
50.0%
Break
11.1%
02.10.2025R128 Rei Sakamoto vs Matteo ArnaldiATP Shanghai 6-7 4-6Hardcourt outdoor Loss
Hold
72.7%
Break
16.7%
30.09.2025Round 15 Rei Sakamoto vs Mackenzie McDonaldATP Shanghai 6-4 6-3Hardcourt outdoor Win
Hold
100.0%
Break
22.2%
23.09.2025Round 19 Rei Sakamoto vs Aleksandar VukicATP Tokyo 4-6 6-7Hardcourt outdoor Loss
Hold
90.9%
Break
0.0%
22.09.2025Round 14 Rei Sakamoto vs Adam WaltonATP Tokyo 6-2 6-4Hardcourt outdoor Win
Hold
100.0%
Break
33.3%
16.09.2025Round 14 Rei Sakamoto vs Nikoloz BasilashviliATP Chengdu 2-6 6-3 1-6Hardcourt outdoor Loss
Hold
66.7%
Break
8.3%
21.08.2025Round 15 Rei Sakamoto vs Ignacio BuseUS Open 4-6 6-4 4-6Hardcourt outdoor Loss
Hold
66.7%
Break
26.7%
20.08.2025Round 14 Rei Sakamoto vs Tyler ZinkUS Open 4-6 7-5 7-6Hardcourt outdoor Win
Hold
82.3%
Break
16.7%
12.08.2025R32 Rei Sakamoto vs Kaylan BigunChallenger Sumter 3-6 1-6Hardcourt outdoor Loss
Hold
50.0%
Break
0.0%