── the model's take · from Elo · neutral court
Win probability
Not enough rating data for a read.
── head to head
Compare
—
model rank
—
—
best surface
—
Right
hand
Right
JPN
country
JPN
180cm
height
170cm
── model Elo over time
Trajectories
Elo — not enough data
■ Jumpei Yamasaki■ Issei Okamura
── meetings by surface
Surface record
Hard3–1
── 4 meetings
Every meeting
| date | tournament | surf | rd | winner | score |
|---|---|---|---|---|---|
| 2025-04-21 | M15 Osaka | Hard | R32 | Jumpei Yamasaki | 6-3 6-4 |
| 2019-04-08 | M25 Matsuyama | Hard | R32 | Issei Okamura | 4-6 7-5 6-1 |
| 2019-04-01 | M15 Kashiwa | Hard | R16 | Jumpei Yamasaki | 6-3 6-2 |
| 2016-09-05 | Thailand F3 | Hard | R16 | Jumpei Yamasaki | 4-6 6-2 6-4 |