Seiya Nakanishi vs Tai Leonard SachPrediction, Head-to-Head Results, and Stats
Seiya Nakanishi and Tai Leonard Sach have met 1 time since 2026; Tai Leonard Sach leads 1–0. Across all meetings Nakanishi has taken 0 sets to Sach's 2. Their most recent meeting: Tai Leonard Sach won at M15 Harmon (2026).
Spread & Straight-Sets Form
Completed best-of-3 matches · Last 12 months
| Indicator | Nakanishi | Leonard Sach | ||
|---|---|---|---|---|
| Indicator | Seiya Nakanishi | Tai Leonard Sach | ||
| Wins in straight sets | 67% | 2/3 | 77% | 20/26 |
| Wins a set when losing | 0% | 0/5 | 40% | 6/15 |
| Goes to a deciding set | 13% | 1/8 | 29% | 12/41 |
| Covers −1.5 sets as favorite | 0% | 0/1 | 25% | 1/4 |
| Covers +1.5 sets as underdog | 25% | 1/4 | 100% | 3/3 |
| Tiebreak sets won | — | 67% | 8/12 | |
| Wins after taking set 1 | 100% | 2/2 | 89% | 24/27 |
| Wins 2-0 after taking set 1 | 100% | 2/2 | 74% | 20/27 |
Colored rows are higher-is-better: green above 50%, red below. Favorite/underdog set by book odds; cover rows count only matches with odds on record. Small sample — read with care. Head-to-head: 1 of 1 completed meetings ended in straight sets (Nakanishi 0, Leonard Sach 1).
Previous meetings
1 career meeting, newest first
Jun 3, 2026
M15 Harmon
H Hard · Round of 32
Player ROI
Hypothetical if you put 1u on each player to win every one of their matches · Last 90 days
| Metric | Nakanishi | Sach |
|---|---|---|
| W-L | 0–3 | 1–1 |
| Avg odds | 5.55 | 1.89 |
| ROI % | -100.0% | -28.0% |
| Units P/L | -3.00u | -0.56u |
Small sample: ROI stabilizes with more matches; fewer than 10 in the window is noisy.
Recent Form
Last five matches per player
Kazuma Kawachi
Futures 2026
Jul 6
Ryotaro Taguchi
Futures 2026
Jun 29
Tai Leonard Sach
M15 Harmon · Round of 32
Jun 3
Tai Sach
M15 Harmon · 1st Round
Jun 3
Duckhee Lee
Futures 2026
Jun 1
Yuta Kawahashi
M15 Yanagawa City 1 · 2nd Round
Oct 30
Hong-Lin Fu
M15 Yanagawa City 1 · 1st Round
Oct 29
Hong Lin Fu
M15 Yanagawa City · Round of 32
Oct 29
Jake Delaney
M15 Harmon · Semifinals
Jun 6
Geun Jun Kim
M15 Harmon · Quarterfinals
Jun 5
Yuya Hirose
M15 Harmon · Round of 16
Jun 4
Seiya Nakanishi
M15 Harmon · Round of 32
Jun 3
Keisuke Saitoh
M15 Gimcheon · Round of 16
May 28
Sungbeen Sim
M15 Gimcheon · Round of 32
May 27
San Hui Sin
M15 Gimcheon · Semifinals
May 23
Sora Fukuda
M15 Gimcheon · Quarterfinals
May 22
Win rate
Matches, sets and games won · Last 12 months · 8–42 matches
| Metric | Nakanishi | Sach |
|---|---|---|
| Matches won | 38% | 64% |
| Sets won | 35% | 62% |
| Games won | 43% | 54% |
Record by tier
Head-to-head record by tournament tier
| Stage | Nakanishi | Sach |
|---|---|---|
| ITF M15 | 0 | 1 |
By surface
Head-to-head record per surface
| Surface | Nakanishi | Sach |
|---|---|---|
| Hard | 0 | 1 |
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