K. Day leads the head-to-head 1-0 since 2018 against E. Koike, over 1 match.
Today on TennisEdge 34 ATP & WTA matches analysed today Model probabilities, market read and our staked picks — see today's board →| Surface | K. Day | E. Koike |
|---|---|---|
| Hard | 1 | 0 |
| Surface | K. Day | E. Koike |
|---|---|---|
| Hard | 1667 (126-92) | 1428 (53-60) |
| Clay | 1628 (56-32) | 1250 (5-12) |
| Grass | 1543 (7-10) | 1604 (4-2) |
ELO is computed per surface from results since 2018; the win-loss pair is that surface's record.
| Date | Winner | Score | Event |
|---|---|---|---|
| Oct. 17, 2026 | K. Day | 2 - 0 | Osaka · Semi-finals · hard |
| Date | Opponent | Score | Event | |
|---|---|---|---|---|
| Oct. 24, 2026 | L | S. Zhang | 1 - 2 | Tokyo · Semi-finals · hard |
| Oct. 22, 2026 | L | A. Ruzic | 1 - 0 | Osaka · 1/8-finals · hard |
| Oct. 20, 2026 | W | S. Kenin | 2 - 0 | Osaka · 1/16-finals · hard |
| Oct. 18, 2026 | L | M. Joint | 2 - 1 | Osaka · Final · hard |
| Oct. 17, 2026 | W | E. Koike | 0 - 2 | Osaka · Semi-finals · hard |
| Date | Opponent | Score | Event | |
|---|---|---|---|---|
| Nov. 11, 2026 | L | K. Okamura | 2 - 0 | W50 Yokohama · 1/16-finals · hard |
| Nov. 3, 2026 | L | X. You | 0 - 2 | W100 Incheon · 1/16-finals · hard |
| Oct. 17, 2026 | L | K. Day | 0 - 2 | Osaka · Semi-finals · hard |
| Oct. 6, 2026 | L | A. Rus | 2 - 0 | W50 Lexington · 1/16-finals |
| Sept. 30, 2026 | L | A. Zucchini | 1 - 2 | W100 Templeton · 1/16-finals |