Data period: 2023–2025 (JRA) / Target jockeys: 2026 active riders only / Win ROI = theoretical return per ¥100 bet on all starters
Trainer Tsujino Yasuyuki Complete Betting Guide【2023–2025 JRA Data Analysis】
3-year combined win ROI: 96.9%. Turf 53% / Dirt 47% split. 2026 active jockeys: Nobuyuki Yoshimura Hayato Yoshida 国分優作 Ryusei Sakai Yasunari Iwata Nozomi Iwata Junya Nishimura 高田潤 Katsuma Sameshima.
※ Signal ratings apply only to jockeys with 2026 riding records at this stable.
🚦 Distance-Based Betting Signals
◎Top Pick: ROI 100%+○Strong: ROI 80%+ & WinRate 8%+▲Watch: ROI 60%+ & WinRate 6%+×Avoid
Turf~1400m42 starts / ◎0 ○0
Win%: 0.0%Place%: 2.4%Show%: 14.3%ROI: 0.0%
💡 Overall ROI 0.0%. No ◎/○ jockeys among active riders. Consider Place/Wide bets only.
| Rating | Jockey | Starts | Win% | Place% | Show% | Win ROI |
|---|---|---|---|---|---|---|
| × | Yasunari Iwata | 9 | 0.0% | 0.0% | 33.3% | 0.0% |
Turf1401~1800m147 starts / ◎1 ○1
Win%: 12.2%Place%: 22.4%Show%: 32.7%ROI: 67.2%
💡 Nozomi Iwata stand out with ROI of 225.8%. Primary win bet candidates.Katsuma Sameshima also show solid stats for win or place bets.ROI is on a slight downward trend. Overall show rate 32.7% is high — effective as place anchor.
| Rating | Jockey | Starts | Win% | Place% | Show% | Win ROI |
|---|---|---|---|---|---|---|
| ◎ | Nozomi Iwata | 24 | 33.3% | 45.8% | 62.5% | 225.8% |
| ○ | Katsuma Sameshima | 5 | 20.0% | 20.0% | 20.0% | 90.0% |
| × | Yasunari Iwata | 6 | 16.7% | 33.3% | 50.0% | 40.0% |
Turf1801~2200m106 starts / ◎0 ○0
Win%: 13.2%Place%: 27.4%Show%: 35.8%ROI: 232.3%
💡 Overall ROI 232.3%. No ◎/○ jockeys among active riders. Consider Place/Wide bets only.
| Rating | Jockey | Starts | Win% | Place% | Show% | Win ROI |
|---|---|---|---|---|---|---|
| × | Yasunari Iwata | 5 | 0.0% | 20.0% | 40.0% | 0.0% |
Turf2201m+70 starts / ◎1 ○0
Win%: 11.4%Place%: 28.6%Show%: 32.9%ROI: 54.3%
💡 高田潤 stand out with ROI of 110.0%. Primary win bet candidates.ROI is on a slight downward trend. Overall show rate 32.9% is high — effective as place anchor.
| Rating | Jockey | Starts | Win% | Place% | Show% | Win ROI |
|---|---|---|---|---|---|---|
| ◎ | 高田潤 | 8 | 25.0% | 62.5% | 62.5% | 110.0% |
Dirt~1400m123 starts / ◎2 ○0
Win%: 10.6%Place%: 17.1%Show%: 26.8%ROI: 60.3%
💡 Nobuyuki Yoshimura・Nozomi Iwata stand out with ROI of 275.0%・150.0%. Primary win bet candidates.ROI is on an upward trend. Overall show rate 26.8% is high — effective as place anchor.
| Rating | Jockey | Starts | Win% | Place% | Show% | Win ROI |
|---|---|---|---|---|---|---|
| ◎ | Nobuyuki Yoshimura | 6 | 33.3% | 50.0% | 50.0% | 275.0% |
| ◎ | Nozomi Iwata | 14 | 28.6% | 28.6% | 35.7% | 150.0% |
| × | 国分優作 | 7 | 0.0% | 14.3% | 28.6% | 0.0% |
| × | Junya Nishimura | 6 | 0.0% | 0.0% | 33.3% | 0.0% |
Dirt1401~1800m160 starts / ◎3 ○1
Win%: 9.4%Place%: 20.0%Show%: 29.4%ROI: 81.4%
💡 国分優作・Junya Nishimura・Ryusei Sakai stand out with ROI of 760.0%・121.2%・110.0%. Primary win bet candidates.高田潤 also show solid stats for win or place bets.ROI is stable. Overall show rate 29.4% is high — effective as place anchor.
| Rating | Jockey | Starts | Win% | Place% | Show% | Win ROI |
|---|---|---|---|---|---|---|
| ◎ | 国分優作 | 6 | 16.7% | 16.7% | 33.3% | 760.0% |
| ◎ | Junya Nishimura | 16 | 12.5% | 18.8% | 25.0% | 121.2% |
| ◎ | Ryusei Sakai | 6 | 16.7% | 16.7% | 33.3% | 110.0% |
| ○ | 高田潤 | 6 | 16.7% | 16.7% | 33.3% | 96.7% |
| ▲ | Nozomi Iwata | 14 | 14.3% | 35.7% | 42.9% | 60.0% |
| × | Yasunari Iwata | 7 | 0.0% | 0.0% | 0.0% | 0.0% |
※ Jockeys with fewer than 5 starts excluded. Target jockeys limited to 2026 active riders.
⚡ Trainer Betting Strategy
Actionable betting scenarios based on 2026 active jockey data.
🔴 Scenario A【Top Priority】 Dirt 1401~1800m
◎ Jockeys: 国分優作 (760.0%)・Junya Nishimura (121.2%)・Ryusei Sakai (110.0%)
Overall ROI 81.4% / Show rate 29.4%. Bet aggressively when ◎ jockeys confirmed.
💰 Recommended: Win + Place. For long-shot ◎ jockeys, go heavier on Place/Wide.
🟡 Scenario B【Secondary】 Dirt ~1400m
◎ Jockeys: Nobuyuki Yoshimura (275.0%)・Nozomi Iwata (150.0%)
Overall ROI 60.3% / Show rate 26.8%. Bet aggressively when ◎ jockeys confirmed.
💰 Recommended: Win + Place. For long-shot ◎ jockeys, go heavier on Place/Wide.
🟡 Scenario C【Secondary】 Turf 1401~1800m
◎ Jockeys: Nozomi Iwata (225.8%)
Overall ROI 67.2% / Show rate 32.7%. Bet aggressively when ◎ jockeys confirmed.
💰 Recommended: Win + Place. For long-shot ◎ jockeys, go heavier on Place/Wide.
⚫ Conditions to Avoid
- Turf ~1400m (overall ROI 0.0%): No ◎/○ jockeys. Place/Wide only.
📋 Jockey Substitution Checklist
| Jockey | Best Condition | Best ROI | Overall ROI | Recommended Bet |
|---|---|---|---|---|
| Junya Nishimura | Turf 1801~2200m | 1963.3% | 257.6% | Win◎ |
| 国分優作 | Dirt 1401~1800m | 760.0% | 182.4% | Win◎ |
| Hayato Yoshida | Turf 1801~2200m | 755.0% | 237.8% | Win◎ |
| Nobuyuki Yoshimura | Dirt ~1400m | 275.0% | 126.9% | Win◎ |
| Nozomi Iwata | Turf 1401~1800m | 225.8% | 152.4% | Win◎ |
| 高田潤 | Turf 2201m+ | 110.0% | 128.9% | Win◎ |
| Ryusei Sakai | Dirt 1401~1800m | 110.0% | 45.0% | Place only |
| Katsuma Sameshima | Turf 1401~1800m | 90.0% | 20.5% | Place only |
| Yasunari Iwata | Turf 1401~1800m | 40.0% | 7.3% | Place only |
📊 Data Details (Supporting Evidence)
Detailed stats supporting the signal ratings above.
Overall Performance by Year
| Year | Starts | Win% | Place% | Show% | Win ROI |
|---|---|---|---|---|---|
| 2023 | 228 | 11.4% | 21.5% | 32.0% | 96.5% |
| 2024 | 232 | 10.8% | 22.4% | 28.4% | 67.9% |
| 2025 | 227 | 11.5% | 20.7% | 30.8% | 126.9% |
| Total | 687 | 11.2% | 21.5% | 30.4% | 96.9% |
Turf Performance by Year × Distance
Turf Sprint (~1400m)
| Year | Starts | Win% | Place% | Show% | Win ROI |
|---|---|---|---|---|---|
| 2023 | 18 | 0.0% | 0.0% | 22.2% | 0.0% |
| 2024 | 10 | 0.0% | 0.0% | 10.0% | 0.0% |
| 2025 | 14 | 0.0% | 7.1% | 7.1% | 0.0% |
Turf Mile (1401~1800m)
| Year | Starts | Win% | Place% | Show% | Win ROI |
|---|---|---|---|---|---|
| 2023 | 39 | 12.8% | 25.6% | 38.5% | 94.1% |
| 2024 | 49 | 10.2% | 28.6% | 34.7% | 30.0% |
| 2025 | 59 | 13.6% | 15.3% | 27.1% | 80.3% |
Turf Middle (1801~2200m)
| Year | Starts | Win% | Place% | Show% | Win ROI |
|---|---|---|---|---|---|
| 2023 | 34 | 17.6% | 32.4% | 35.3% | 297.9% |
| 2024 | 39 | 5.1% | 15.4% | 20.5% | 35.6% |
| 2025 | 33 | 18.2% | 36.4% | 54.5% | 397.0% |
Turf Long (2201m+)
| Year | Starts | Win% | Place% | Show% | Win ROI |
|---|---|---|---|---|---|
| 2023 | 26 | 19.2% | 42.3% | 46.2% | 99.2% |
| 2024 | 22 | 13.6% | 18.2% | 22.7% | 55.5% |
| 2025 | 22 | 0.0% | 22.7% | 27.3% | 0.0% |
Dirt Performance by Year × Distance
Dirt Sprint (~1400m)
| Year | Starts | Win% | Place% | Show% | Win ROI |
|---|---|---|---|---|---|
| 2023 | 44 | 9.1% | 15.9% | 29.5% | 39.5% |
| 2024 | 40 | 15.0% | 25.0% | 32.5% | 90.2% |
| 2025 | 39 | 7.7% | 10.3% | 17.9% | 53.1% |
Dirt Middle (1401~1800m)
| Year | Starts | Win% | Place% | Show% | Win ROI |
|---|---|---|---|---|---|
| 2023 | 58 | 8.6% | 13.8% | 25.9% | 54.3% |
| 2024 | 59 | 10.2% | 23.7% | 30.5% | 121.2% |
| 2025 | 43 | 9.3% | 23.3% | 32.6% | 63.3% |
Dirt Long (1801~2200m)
| Year | Starts | Win% | Place% | Show% | Win ROI |
|---|---|---|---|---|---|
| 2023 | 5 | 20.0% | 20.0% | 20.0% | 148.0% |
| 2024 | 6 | 33.3% | 33.3% | 33.3% | 83.3% |
| 2025 | 8 | 12.5% | 25.0% | 50.0% | 638.8% |
Jockey Stats (3-Year Combined / 2026 Active Only)
| Jockey | Starts | Win% | Place% | Show% | Win ROI |
|---|---|---|---|---|---|
| Nozomi Iwata | 58 | 27.6% | 39.7% | 50.0% | 152.4% |
| Yasunari Iwata | 33 | 3.0% | 12.1% | 27.3% | 7.3% |
| Junya Nishimura | 33 | 15.2% | 24.2% | 36.4% | 257.6% |
| 国分優作 | 25 | 4.0% | 12.0% | 20.0% | 182.4% |
| Katsuma Sameshima | 22 | 4.5% | 18.2% | 27.3% | 20.5% |
| 高田潤 | 18 | 33.3% | 50.0% | 55.6% | 128.9% |
| Ryusei Sakai | 18 | 11.1% | 16.7% | 33.3% | 45.0% |
| Nobuyuki Yoshimura | 13 | 15.4% | 23.1% | 30.8% | 126.9% |
| Hayato Yoshida | 9 | 22.2% | 22.2% | 22.2% | 237.8% |
Key Jockey Breakdown: Turf × Dirt × Year
▶ Nozomi Iwata
| Year | Turf Starts | Turf Win% | Turf Place% | Turf Show% | Turf ROI | Dirt Starts | Dirt Win% | Dirt Place% | Dirt Show% | Dirt ROI |
|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | 15 | 33.3% | 60.0% | 80.0% | 244.7% | 6 | 33.3% | 50.0% | 66.7% | 128.3% |
| 2024 | 3 | 0.0% | 0.0% | 0.0% | 0.0% | 15 | 33.3% | 46.7% | 53.3% | 154.0% |
| 2025 | 10 | 40.0% | 40.0% | 50.0% | 209.0% | 9 | 0.0% | 0.0% | 0.0% | 0.0% |
| Total | 28 | 32.1% | 46.4% | 60.7% | 205.7% | 30 | 23.3% | 33.3% | 40.0% | 102.7% |
▶ Yasunari Iwata
| Year | Turf Starts | Turf Win% | Turf Place% | Turf Show% | Turf ROI | Dirt Starts | Dirt Win% | Dirt Place% | Dirt Show% | Dirt ROI |
|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | 9 | 0.0% | 11.1% | 44.4% | 0.0% | 4 | 0.0% | 0.0% | 0.0% | 0.0% |
| 2024 | 5 | 0.0% | 20.0% | 20.0% | 0.0% | 1 | 0.0% | 0.0% | 0.0% | 0.0% |
| 2025 | 9 | 11.1% | 22.2% | 44.4% | 26.7% | 5 | 0.0% | 0.0% | 0.0% | 0.0% |
| Total | 23 | 4.3% | 17.4% | 39.1% | 10.4% | 10 | 0.0% | 0.0% | 0.0% | 0.0% |
▶ Junya Nishimura
| Year | Turf Starts | Turf Win% | Turf Place% | Turf Show% | Turf ROI | Dirt Starts | Dirt Win% | Dirt Place% | Dirt Show% | Dirt ROI |
|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | 3 | 66.7% | 100.0% | 100.0% | 223.3% | 11 | 18.2% | 18.2% | 36.4% | 176.4% |
| 2024 | 5 | 0.0% | 0.0% | 20.0% | 0.0% | 12 | 0.0% | 8.3% | 16.7% | 0.0% |
| 2025 | 2 | 50.0% | 100.0% | 100.0% | 2945.0% | — | ||||
| Total | 10 | 30.0% | 50.0% | 60.0% | 656.0% | 23 | 8.7% | 13.0% | 26.1% | 84.3% |
▶ 国分優作
| Year | Turf Starts | Turf Win% | Turf Place% | Turf Show% | Turf ROI | Dirt Starts | Dirt Win% | Dirt Place% | Dirt Show% | Dirt ROI |
|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | 5 | 0.0% | 0.0% | 0.0% | 0.0% | 4 | 0.0% | 0.0% | 50.0% | 0.0% |
| 2024 | 3 | 0.0% | 0.0% | 0.0% | 0.0% | 7 | 14.3% | 28.6% | 28.6% | 651.4% |
| 2025 | 2 | 0.0% | 0.0% | 0.0% | 0.0% | 4 | 0.0% | 25.0% | 25.0% | 0.0% |
| Total | 10 | 0.0% | 0.0% | 0.0% | 0.0% | 15 | 6.7% | 20.0% | 33.3% | 304.0% |
▶ Katsuma Sameshima
| Year | Turf Starts | Turf Win% | Turf Place% | Turf Show% | Turf ROI | Dirt Starts | Dirt Win% | Dirt Place% | Dirt Show% | Dirt ROI |
|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | 3 | 0.0% | 0.0% | 0.0% | 0.0% | 7 | 0.0% | 28.6% | 57.1% | 0.0% |
| 2024 | 2 | 0.0% | 0.0% | 0.0% | 0.0% | — | ||||
| 2025 | 9 | 11.1% | 22.2% | 22.2% | 50.0% | 1 | 0.0% | 0.0% | 0.0% | 0.0% |
| Total | 14 | 7.1% | 14.3% | 14.3% | 32.1% | 8 | 0.0% | 25.0% | 50.0% | 0.0% |
▶ 高田潤
| Year | Turf Starts | Turf Win% | Turf Place% | Turf Show% | Turf ROI | Dirt Starts | Dirt Win% | Dirt Place% | Dirt Show% | Dirt ROI |
|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | 1 | 100.0% | 100.0% | 100.0% | 340.0% | 1 | 0.0% | 0.0% | 0.0% | 0.0% |
| 2024 | 4 | 25.0% | 25.0% | 25.0% | 135.0% | 4 | 25.0% | 25.0% | 50.0% | 145.0% |
| 2025 | 3 | 0.0% | 100.0% | 100.0% | 0.0% | 5 | 60.0% | 60.0% | 60.0% | 172.0% |
| Total | 8 | 25.0% | 62.5% | 62.5% | 110.0% | 10 | 40.0% | 40.0% | 50.0% | 144.0% |
▶ Ryusei Sakai
| Year | Turf Starts | Turf Win% | Turf Place% | Turf Show% | Turf ROI | Dirt Starts | Dirt Win% | Dirt Place% | Dirt Show% | Dirt ROI |
|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | 5 | 20.0% | 20.0% | 20.0% | 30.0% | 4 | 25.0% | 25.0% | 50.0% | 165.0% |
| 2024 | 3 | 0.0% | 33.3% | 66.7% | 0.0% | 4 | 0.0% | 0.0% | 25.0% | 0.0% |
| 2025 | 1 | 0.0% | 0.0% | 0.0% | 0.0% | 1 | 0.0% | 0.0% | 0.0% | 0.0% |
| Total | 9 | 11.1% | 22.2% | 33.3% | 16.7% | 9 | 11.1% | 11.1% | 33.3% | 73.3% |
▶ Nobuyuki Yoshimura
| Year | Turf Starts | Turf Win% | Turf Place% | Turf Show% | Turf ROI | Dirt Starts | Dirt Win% | Dirt Place% | Dirt Show% | Dirt ROI |
|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | — | — | ||||||||
| 2024 | 1 | 0.0% | 0.0% | 0.0% | 0.0% | 2 | 50.0% | 100.0% | 100.0% | 375.0% |
| 2025 | 4 | 0.0% | 0.0% | 25.0% | 0.0% | 6 | 16.7% | 16.7% | 16.7% | 150.0% |
| Total | 5 | 0.0% | 0.0% | 20.0% | 0.0% | 8 | 25.0% | 37.5% | 37.5% | 206.2% |
▶ Hayato Yoshida
| Year | Turf Starts | Turf Win% | Turf Place% | Turf Show% | Turf ROI | Dirt Starts | Dirt Win% | Dirt Place% | Dirt Show% | Dirt ROI |
|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | 2 | 50.0% | 50.0% | 50.0% | 755.0% | 4 | 0.0% | 0.0% | 0.0% | 0.0% |
| 2024 | — | 1 | 0.0% | 0.0% | 0.0% | 0.0% | ||||
| 2025 | 2 | 50.0% | 50.0% | 50.0% | 315.0% | — | ||||
| Total | 4 | 50.0% | 50.0% | 50.0% | 535.0% | 5 | 0.0% | 0.0% | 0.0% | 0.0% |
Grade Race Performance (G1 / G2 / G3)
G1
| Year | Starts | Win% | Place% | Show% | Win ROI |
|---|---|---|---|---|---|
| 2023 | 4 | 0.0% | 25.0% | 25.0% | 0.0% |
| 2024 | 3 | 0.0% | 0.0% | 33.3% | 0.0% |
| 2025 | 3 | 0.0% | 0.0% | 0.0% | 0.0% |
| Total | 10 | 0.0% | 10.0% | 20.0% | 0.0% |
| Jockey | Starts | Win% | Place% | Show% | Win ROI |
|---|---|---|---|---|---|
| Yasunari Iwata | 2 | 0.0% | 0.0% | 0.0% | 0.0% |
| Nozomi Iwata | 1 | 0.0% | 100.0% | 100.0% | 0.0% |
| Ryusei Sakai | 1 | 0.0% | 0.0% | 0.0% | 0.0% |
G2
| Year | Starts | Win% | Place% | Show% | Win ROI |
|---|---|---|---|---|---|
| 2023 | 5 | 20.0% | 20.0% | 40.0% | 464.0% |
| 2024 | 6 | 16.7% | 16.7% | 33.3% | 28.3% |
| 2025 | 7 | 0.0% | 0.0% | 0.0% | 0.0% |
| Total | 18 | 11.1% | 11.1% | 22.2% | 138.3% |
| Jockey | Starts | Win% | Place% | Show% | Win ROI |
|---|---|---|---|---|---|
| Yasunari Iwata | 3 | 0.0% | 0.0% | 33.3% | 0.0% |
| Nozomi Iwata | 2 | 50.0% | 50.0% | 50.0% | 1160.0% |
| Junya Nishimura | 1 | 0.0% | 0.0% | 0.0% | 0.0% |
| Ryusei Sakai | 1 | 0.0% | 0.0% | 0.0% | 0.0% |
G3
| Year | Starts | Win% | Place% | Show% | Win ROI |
|---|---|---|---|---|---|
| 2023 | 7 | 28.6% | 28.6% | 42.9% | 164.3% |
| 2024 | 7 | 0.0% | 14.3% | 14.3% | 0.0% |
| 2025 | 3 | 33.3% | 66.7% | 66.7% | 480.0% |
| Total | 17 | 17.6% | 29.4% | 35.3% | 152.4% |
| Jockey | Starts | Win% | Place% | Show% | Win ROI |
|---|---|---|---|---|---|
| Yasunari Iwata | 3 | 0.0% | 33.3% | 66.7% | 0.0% |
| Nozomi Iwata | 1 | 0.0% | 0.0% | 0.0% | 0.0% |
| Junya Nishimura | 1 | 100.0% | 100.0% | 100.0% | 370.0% |
| 国分優作 | 1 | 0.0% | 0.0% | 0.0% | 0.0% |
| 高田潤 | 1 | 0.0% | 100.0% | 100.0% | 0.0% |
※ Extreme ROI values may reflect small samples with high-dividend races. Treat data with fewer than 10 starts as reference only.
※ This data is for reference purposes only and does not constitute investment advice.