Issei Okamura vs Jumpei Yamasaki — M25 Matsuyama 1 Round of 32
M25 Matsuyama 1 · ITF · Round of 32
2 — 1
Sets
Thursday, 11 April 2019 ·
hard
Okamura I.4-6 7-5 6-1
Yamasaki J.
Okamura I.
4762
Yamasaki J.
6511
Issei Okamura defeated Jumpei Yamasaki 4-6 7-5 6-1 in the M25 Matsuyama 1 round of 32 on hard. The upset overturned the form book — Jumpei Yamasaki came in ranked #1038, leading the head-to-head 4–0. Issei Okamura claimed a first win over Jumpei Yamasaki in five meetings, narrowing the head-to-head to 4–1.
Key context
- Match story: Issei Okamura dropped the opening set before beating Jumpei Yamasaki 4–6 7–5 6–1.
Head to head
0–4| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-04-22 | M15 Osaka 2 | R32 | hard | Jumpei Yamasaki | 6-3 6-4 |
| 2024-03-18 | M15 Nishi-Tokyo 1 | Q32 | hard | Jumpei Yamasaki | 6-2 6-1 |
| 2019-04-04 | M15 Kashiwa 1 | R16 | hard | Jumpei Yamasaki | 6-3 6-2 |
| 2016-09-05 | Thailand F3 | R16 | hard | Jumpei Yamasaki | 4-6 6-2 6-4 |
Statistics
This season1st serve in·Even
63%
65%
1st serve points won·Even
64%
66%
2nd serve points won·Even
48%
50%
Service points won·Even
58%
61%
Return points won·Even
39%
41%
Break points saved·Even
56%
58%
Aces / match·Slight edge
1.8
3.1
Double faults / match·Dominant
2.7
1.2
Averages over each player's completed matches in the selected window (162 vs 182). ATP, WTA & Challenger.