ChallengerHardSeoul2026-10-30 02:00

Rei Sakamoto v Billy Harris

Match preview, prediction and odds

Our pick

LeanVOID

R. Sakamoto to win 2-01.73

Price too short today - wait for 1.88 or bigger · our chance 53% · market 77/23, us 82/18

R. Sakamoto is 8-2 over the last ten and 35-19 on hard this season. B. Harris is 4-6 over the last ten and 13-20 on hard this season.

The pick is R. Sakamoto to win 2-0. We make it a 53% chance, so it is only worth backing at 1.88 or bigger. At 1.73 that is not there yet - leave it, or wait for the price to drift in-play (an early break against usually does it).

An opinion from the numbers, not a guarantee. 19+, bet responsibly.

Key numbers

R. Sakamoto		B. Harris
137	Ranking	241
8-2	Last 10	4-6
WWLWW	Last 5	WWLLL
+2.1	V the odds	-1.2
43-24	Season	21-33
35-19	Hard 2026	13-20
2	Last 7 days	2
1d	Days rest	1d
2	Wins here	2
Clear	Fitness	Clear
	Head to head First meeting

V the odds: wins above (or below) what the prices expected over the last 10 - form with the strength of the opposition built in.

The market

R. SakamotoFAV1.2677%

B. Harris4.2823%

Market says77% Sakamoto

Percentages are the implied chance of winning with the bookmaker's margin removed.

Recent form

R. SakamotoLWWLW

B. HarrisWWWLL

Last five completed matches, most recent first.

Head to head

First career meetingNo previous matches between these two on record.

This season & this event

R. Sakamoto

B. Harris

43-25

35-20

Did not play

2026 record

2026 on hard

Here in 2025

Here in 2024

22-33

14-20

Did not play

Ranking points fall off a year after they are earned, so a player who went deep here last year must match it or drop in the rankings. That shapes effort in a way the price does not always show.

The players

Rei Sakamoto

Japan

Billy Harris

United Kingdom

137

Japan

41–24

29–16

9–6

2–2

Ranking

Age

Country

2026 W/L

Titles

Hard

Clay

Grass

241

United Kingdom

19–32

11–20

1–8

7–4

Ranking, record and surface splits are for the most recent season on file. Height, weight and handedness are not published by our data provider.

R. Sakamoto — last 10

With the pre-match price we recorded at the time.

Date	Event	Surface	Opponent	Score	Their price	Market	Result
2026-10-30	Seoul	Hard	B. Harris	RET	1.26	77%	LOST
Games in each set0-3 SakamotoHarrisPoints won13%87%Serve points won0%80%Return points won20%100%Games held0 of 12 of 2Break points saved0 of 10 of 0Aces04Double faults10
2026-10-29	Seoul	Hard	Z. Zhang		1.47	66%	WON
Games in each set6-0 6-4 SakamotoZhangPoints won63%37%Serve points won81%55%Return points won45%19%Games held8 of 84 of 8Break points saved1 of 14 of 8Aces66Double faults03
2026-10-27	Seoul	Hard	K. Samrej		1.12	86%	WON
Games in each set6-3 6-4 SakamotoSamrejPoints won61%39%Serve points won80%60%Return points won40%20%Games held10 of 107 of 9Break points saved2 of 23 of 5Aces81Double faults13
2026-10-20	Almaty	Hard (Indoor)	K. Khachanov		3.23	70%	LOST
Games in each set2-6 4-6 SakamotoKhachanovPoints won39%61%Serve points won54%88%Return points won12%46%Games held6 of 99 of 9Break points saved7 of 100 of 0Aces59Double faults30
2026-10-18	Almaty	Hard (Indoor)	G. Diallo		1.88	51%	WON
Games in each set2-6 6-4 6-4 SakamotoDialloPoints won48%52%Serve points won65%72%Return points won28%35%Games held12 of 1412 of 14Break points saved5 of 77 of 9Aces1318Double faults30
2026-10-17	Almaty	Hard (Indoor)	A. Omarkhanov		1.07	90%	WON
Games in each set6-2 6-1 SakamotoOmarkhanovPoints won65%35%Serve points won78%44%Return points won56%22%Games held7 of 73 of 8Break points saved2 of 24 of 9Aces15Double faults04
2026-10-12	Shanghai	Hard	A. De Minaur		3.13	69%	LOST
Games in each set6-7 4-6 SakamotoMinaurPoints won45%55%Serve points won67%80%Return points won20%33%Games held10 of 1111 of 11Break points saved0 of 12 of 2Aces1311Double faults02
2026-10-10	Shanghai	Hard	A. Rublev		3.30	71%	WON
Games in each set6-4 6-4 SakamotoRublevPoints won53%47%Serve points won71%67%Return points won33%29%Games held10 of 108 of 10Break points saved2 of 21 of 3Aces89Double faults12
2026-10-07	Shanghai	Hard	M. Trungelliti		1.47	66%	WON
Games in each set6-3 7-5 SakamotoTrungellitiPoints won56%44%Serve points won75%56%Return points won44%25%Games held9 of 107 of 11Break points saved0 of 17 of 11Aces96Double faults25
2026-10-06	Shanghai	Hard	K. Jacquet		2.24	57%	WON
Games in each set7-6 4-6 7-6 SakamotoJacquetPoints won49%51%Serve points won68%73%Return points won27%32%Games held15 of 1716 of 17Break points saved7 of 95 of 6Aces138Double faults40

B. Harris — last 10

With the pre-match price we recorded at the time.

Date	Event	Surface	Opponent	Score	Their price	Market	Result
2026-10-30	Seoul	Hard	R. Sakamoto	RET	4.28	77%	WON
Games in each set3-0 HarrisSakamotoPoints won87%13%Serve points won80%0%Return points won100%20%Games held2 of 20 of 1Break points saved0 of 00 of 1Aces40Double faults01
2026-10-29	Seoul	Hard	A. Vukic		2.89	67%	WON
Games in each set6-2 6-4 HarrisVukicPoints won55%45%Serve points won65%53%Return points won47%35%Games held8 of 95 of 9Break points saved1 of 29 of 13Aces43Double faults11
2026-10-27	Seoul	Hard	J. Kim		—	—	WON
Games in each set7-6 6-2 HarrisKimPoints won56%44%Serve points won61%49%Return points won51%39%Games held8 of 106 of 10Break points saved6 of 82 of 6Aces22Double faults45
2026-10-12	Roanne	Hard (Indoor)	M. Bobichon		1.38	70%	LOST
Games in each set5-7 6-7 HarrisBobichonPoints won47%53%Serve points won60%67%Return points won33%40%Games held9 of 1210 of 12Break points saved4 of 76 of 8Aces29Double faults35
2026-10-05	Shanghai	Hard	D. Svrcina		3.18	70%	LOST
Games in each set6-4 6-7 5-7 HarrisSvrcinaPoints won48%52%Serve points won56%62%Return points won38%44%Games held12 of 1712 of 17Break points saved5 of 102 of 7Aces159Double faults16
2026-09-28	Mouilleron-Le-Captif	Hard (Indoor)	F. Balshaw		2.20	58%	LOST
Games in each set6-7 6-3 6-7 HarrisBalshawPoints won50%50%Serve points won63%64%Return points won36%37%Games held14 of 1712 of 16Break points saved2 of 55 of 9Aces28Double faults28
2026-09-24	St. Tropez	Hard	M. Cassone		1.90	51%	LOST
Games in each set6-7 4-6 HarrisCassonePoints won46%54%Serve points won73%81%Return points won19%27%Games held10 of 1111 of 11Break points saved0 of 10 of 0Aces64Double faults31
2026-09-21	St. Tropez	Hard	N. Budkov Kjaer		2.53	62%	WON
Games in each set3-6 6-3 7-5 HarrisKjaerPoints won52%48%Serve points won61%60%Return points won40%39%Games held12 of 1511 of 15Break points saved9 of 124 of 8Aces117Double faults55
2026-09-14	Rennes	Hard (Indoor)	U. Blanchet		2.10	54%	LOST
Games in each set5-7 6-7 HarrisBlanchetPoints won48%52%Serve points won60%65%Return points won35%40%Games held9 of 1210 of 12Break points saved3 of 66 of 8Aces24Double faults22
2026-09-09	Cassis	Hard	M. Echargui		1.85	52%	LOST
Games in each set5-7 6-1 6-7 HarrisEcharguiPoints won50%50%Serve points won49%48%Return points won52%51%Games held8 of 157 of 16Break points saved9 of 1611 of 20Aces86Double faults107

Common questions

Who is favourite, Rei Sakamoto or Billy Harris?

Rei Sakamoto is favourite at 1.26, which is a 77% chance once the bookmaker's margin is removed.

What are the odds for Rei Sakamoto vs Billy Harris?

Rei Sakamoto is 1.26 and Billy Harris is 4.28, the prices we recorded for the Seoul match.

Who will win Rei Sakamoto vs Billy Harris?

Our model makes it Rei Sakamoto to win 2-0 at 1.73 (Lean confidence).

Also at this event

Jasika v Chung Shimabukuro v Wong Atmane v Hong