Rei Sakamoto vs Akira SantillanYokohama CH Semi-final

Yokohama CH · CHALLENGER · Semi-final
#161ATP
1608ELO
1589Hard ELO
$233kYTD
$492kCAREER
20 yrs · 193 cm · Right-handed
Last 10 · pre-match
LWLWWLLWWW
2 — 1
Sets
Monday, 17 November 2025
hard
#301ATP
1367ELO
1343Hard ELO
29 yrs · 180 cm · Right-handed
Last 10 · pre-match
WLWWLLLLWL
Sakamoto R.
3-6 6-1 6-3
Santillan A.
Sakamoto R.
3662
Santillan A.
6131

Rei Sakamoto defeated Akira Santillan 3-6 6-1 6-3 in the Yokohama CH semi-final on hard. The result followed the form book — Rei Sakamoto came in ranked #161, defending last year's quarter-final.

Key context

Head to head

No previous meetings on record.

Serve vs return

This season
Sakamoto R.serving83% hold

wins 65% of points on serve vs Santillan A.

Santillan A.serving85% hold

wins 66% of points on serve vs Sakamoto R.

Serve-dominated — both hold easily, expect tiebreaks

Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About

Statistics

This season
1st serve in·Even
63%
64%
1st serve points won·Even
73%
71%
2nd serve points won·Even
51%
50%
Service points won·Even
65%
64%
Return points won·Even
37%
39%
Break points saved·Slight edge
61%
52%
Aces / match·Slight edge
7.0
5.6
Double faults / match·Dominant
2.1
3.7

Averages over each player's completed matches in the selected window (87 vs 22). ATP, WTA & Challenger.

Clutch

Under pressure
Clutch Rating·Dominant
49
0
Break points saved·Dominant
87
32
Break points won·Slight edge
8
16
Deciding sets·Dominant
93
17
Tiebreaks·Clear edge
23
11

Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About

Umpiry Score

Pre-match
7.0
Strong advantageUmpiry Score
5.4
Clear underdogUmpiry Score
Form & Matchup
8.2+247 Hard Elo edge
Surface ELO
1.8Hard Elo 1343
8.1Overall Elo 1608
ELO gap
1.9Overall Elo 1367
5.0No prior meetings
H2H
5.0
4.9
Surface form
5.3
Win streak
0.0
Fatigue & Travel
5.7
Minutes 14d
5.1
0.0
3-set count
4.0
6.0
Prev. match
Context
7.0
Defending pts
5.0

The Umpiry Score combines match-context factors — matchup, form, fatigue, travel and motivation — into a single 0–10 score, updated daily. Read how it works.

Freshness

Recent load
Freshness·Clear edge
95
80

Sakamoto R.: 12 days rest · 2 matches (14d) · Santillan A.: 1 day rest · 1 match, 24 games (7d). Higher means fresher. About

Conditions

Court speed
Mediumbalanced pace
SlowFast