Trainer Tezuka Takahisa Complete Betting Guide【2023-2025 JRA Data Analysis】

Data period: 2023–2025 (JRA) / Target jockeys: 2026 active riders only / Win ROI = theoretical return per ¥100 bet on all starters

Trainer Tezuka Takahisa Complete Betting Guide【2023–2025 JRA Data Analysis】

3-year combined win ROI: 77.7%. Turf 71% / Dirt 29% split. 2026 active jockeys: Christophe Lemaire Yuji Tannai Nozomi Iwata Junji Shimada Keita Tosaki Kazuo Yokoyama Takeshi Yokoyama Yutaka Take Hiroki Ishikawa 菅原明良 長浜鴻緒.

※ 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~1400m119 starts / ◎3 ○0
Win%: 9.2%Place%: 17.6%Show%: 25.2%ROI: 291.6%
💡 Junji Shimada・Keita Tosaki・Christophe Lemaire stand out with ROI of 984.4%・218.3%・178.0%. Primary win bet candidates.ROI is on an upward trend. Overall show rate 25.2% is high — effective as place anchor.
Rating Jockey Starts Win% Place% Show% Win ROI
Junji Shimada 27 7.4% 18.5% 18.5% 984.4%
Keita Tosaki 6 33.3% 50.0% 66.7% 218.3%
Christophe Lemaire 5 40.0% 40.0% 40.0% 178.0%
× Yuji Tannai 6 16.7% 33.3% 33.3% 48.3%
× Hiroki Ishikawa 8 0.0% 0.0% 12.5% 0.0%
Turf1401~1800m295 starts / ◎0 ○0
Win%: 11.2%Place%: 25.8%Show%: 37.6%ROI: 39.5%
💡 Overall ROI 39.5%. No ◎/○ jockeys among active riders. Consider Place/Wide bets only.
Rating Jockey Starts Win% Place% Show% Win ROI
Kazuo Yokoyama 9 22.2% 55.6% 77.8% 74.4%
× Christophe Lemaire 32 21.9% 53.1% 68.8% 48.1%
× Keita Tosaki 19 15.8% 31.6% 52.6% 43.2%
× Takeshi Yokoyama 11 9.1% 9.1% 9.1% 24.5%
× Junji Shimada 42 2.4% 9.5% 11.9% 12.4%
× Hiroki Ishikawa 14 0.0% 7.1% 21.4% 0.0%
× 長浜鴻緒 10 0.0% 10.0% 20.0% 0.0%
× Yutaka Take 9 0.0% 55.6% 55.6% 0.0%
× 菅原明良 5 0.0% 0.0% 20.0% 0.0%
Turf1801~2200m204 starts / ◎2 ○2
Win%: 12.3%Place%: 22.1%Show%: 35.8%ROI: 70.7%
💡 Junji Shimada・長浜鴻緒 stand out with ROI of 112.5%・111.8%. Primary win bet candidates.Takeshi Yokoyama・Hiroki Ishikawa also show solid stats for win or place bets.ROI is on an upward trend. Overall show rate 35.8% is high — effective as place anchor.
Rating Jockey Starts Win% Place% Show% Win ROI
Junji Shimada 20 10.0% 10.0% 15.0% 112.5%
長浜鴻緒 11 9.1% 27.3% 27.3% 111.8%
Takeshi Yokoyama 14 28.6% 42.9% 50.0% 92.1%
Hiroki Ishikawa 17 17.6% 35.3% 47.1% 91.8%
× Christophe Lemaire 20 30.0% 40.0% 60.0% 53.0%
× Yuji Tannai 9 11.1% 22.2% 22.2% 32.2%
× Keita Tosaki 11 9.1% 36.4% 54.5% 20.0%
Turf2201m+80 starts / ◎0 ○0
Win%: 12.5%Place%: 21.2%Show%: 31.2%ROI: 45.5%
💡 Overall ROI 45.5%. No ◎/○ jockeys among active riders. Consider Place/Wide bets only.
Rating Jockey Starts Win% Place% Show% Win ROI
Christophe Lemaire 11 27.3% 54.5% 63.6% 75.5%
Takeshi Yokoyama 7 14.3% 28.6% 57.1% 64.3%
× Junji Shimada 5 0.0% 0.0% 0.0% 0.0%
Dirt~1400m95 starts / ◎2 ○0
Win%: 4.2%Place%: 9.5%Show%: 14.7%ROI: 35.4%
💡 Takeshi Yokoyama・長浜鴻緒 stand out with ROI of 222.0%・195.7%. Primary win bet candidates.ROI is on an upward trend.
Rating Jockey Starts Win% Place% Show% Win ROI
Takeshi Yokoyama 5 20.0% 20.0% 20.0% 222.0%
長浜鴻緒 7 14.3% 28.6% 28.6% 195.7%
× Junji Shimada 15 0.0% 6.7% 20.0% 0.0%
× Hiroki Ishikawa 11 0.0% 18.2% 27.3% 0.0%
× Christophe Lemaire 5 0.0% 0.0% 0.0% 0.0%
Dirt1401~1800m167 starts / ◎1 ○1
Win%: 9.0%Place%: 22.8%Show%: 29.9%ROI: 47.8%
💡 長浜鴻緒 stand out with ROI of 160.9%. Primary win bet candidates.Hiroki Ishikawa also show solid stats for win or place bets.ROI is stable. Overall show rate 29.9% is high — effective as place anchor.
Rating Jockey Starts Win% Place% Show% Win ROI
長浜鴻緒 11 18.2% 27.3% 27.3% 160.9%
Hiroki Ishikawa 13 15.4% 15.4% 15.4% 83.8%
Takeshi Yokoyama 8 12.5% 25.0% 50.0% 66.2%
Christophe Lemaire 13 15.4% 53.8% 53.8% 61.5%
× Junji Shimada 31 3.2% 16.1% 29.0% 28.7%

※ 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】 Turf ~1400m

◎ Jockeys: Junji Shimada (984.4%)・Keita Tosaki (218.3%)・Christophe Lemaire (178.0%)

Overall ROI 291.6% / Show rate 25.2%. Bet aggressively when ◎ jockeys confirmed.

💰 Recommended: Win + Place. For long-shot ◎ jockeys, go heavier on Place/Wide.

🟡 Scenario B【Secondary】 Dirt ~1400m

◎ Jockeys: Takeshi Yokoyama (222.0%)・長浜鴻緒 (195.7%)

Overall ROI 35.4% / Show rate 14.7%. Bet aggressively when ◎ jockeys confirmed.

💰 Recommended: Win + Place. For long-shot ◎ jockeys, go heavier on Place/Wide.

🟡 Scenario C【Secondary】 Dirt 1401~1800m

◎ Jockeys: 長浜鴻緒 (160.9%)

Overall ROI 47.8% / Show rate 29.9%. Bet aggressively when ◎ jockeys confirmed.

💰 Recommended: Win + Place. For long-shot ◎ jockeys, go heavier on Place/Wide.

⚫ Conditions to Avoid

  • Turf 1401~1800m (overall ROI 39.5%): No ◎/○ jockeys. Place/Wide only.
  • Turf 2201m+ (overall ROI 45.5%): No ◎/○ jockeys. Place/Wide only.

📋 Jockey Substitution Checklist

Jockey Best Condition Best ROI Overall ROI Recommended Bet
Junji Shimada Turf ~1400m 984.4% 210.0% Win◎
Takeshi Yokoyama Dirt ~1400m 222.0% 74.5% Place
Keita Tosaki Turf ~1400m 218.3% 58.8% Place only
長浜鴻緒 Dirt ~1400m 195.7% 95.0% Win+Place
Christophe Lemaire Turf ~1400m 178.0% 60.1% Place
Hiroki Ishikawa Turf 1801~2200m 91.8% 38.4% Place only
Kazuo Yokoyama Turf 1401~1800m 74.4% 74.4% Place
Yuji Tannai Turf ~1400m 48.3% 23.2% Place only
Yutaka Take 0% 20.6% Place only
菅原明良 0% 0.0% Place only
Nozomi Iwata 0% 0.0% 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 339 9.7% 20.9% 33.3% 49.1%
2024 331 10.3% 23.0% 31.7% 52.4%
2025 319 10.7% 20.1% 28.8% 134.4%
Total 989 10.2% 21.3% 31.3% 77.7%

Turf Performance by Year × Distance

Turf Sprint (~1400m)

Year Starts Win% Place% Show% Win ROI
2023 62 11.3% 21.0% 27.4% 142.4%
2024 35 5.7% 17.1% 22.9% 32.9%
2025 22 9.1% 9.1% 22.7% 1123.6%

Turf Mile (1401~1800m)

Year Starts Win% Place% Show% Win ROI
2023 96 9.4% 22.9% 39.6% 27.2%
2024 102 15.7% 34.3% 43.1% 71.7%
2025 97 8.2% 19.6% 29.9% 17.8%

Turf Middle (1801~2200m)

Year Starts Win% Place% Show% Win ROI
2023 61 11.5% 23.0% 41.0% 29.3%
2024 73 8.2% 19.2% 32.9% 42.7%
2025 70 17.1% 24.3% 34.3% 135.9%

Turf Long (2201m+)

Year Starts Win% Place% Show% Win ROI
2023 21 14.3% 19.0% 33.3% 23.8%
2024 22 4.5% 9.1% 18.2% 17.3%
2025 37 16.2% 29.7% 37.8% 74.6%

Dirt Performance by Year × Distance

Dirt Sprint (~1400m)

Year Starts Win% Place% Show% Win ROI
2023 33 3.0% 6.1% 12.1% 19.1%
2024 40 2.5% 10.0% 17.5% 6.2%
2025 22 9.1% 13.6% 13.6% 112.7%

Dirt Middle (1401~1800m)

Year Starts Win% Place% Show% Win ROI
2023 57 8.8% 26.3% 33.3% 29.6%
2024 49 12.2% 24.5% 30.6% 94.3%
2025 61 6.6% 18.0% 26.2% 27.5%

Dirt Long (1801~2200m)

Year Starts Win% Place% Show% Win ROI
2023 5 0.0% 0.0% 20.0% 0.0%
2024 6 33.3% 50.0% 50.0% 86.7%
2025 7 0.0% 14.3% 14.3% 0.0%

Jockey Stats (3-Year Combined / 2026 Active Only)

Jockey Starts Win% Place% Show% Win ROI
Junji Shimada 144 4.2% 11.8% 17.4% 210.0%
Christophe Lemaire 88 23.9% 47.7% 59.1% 60.1%
Hiroki Ishikawa 69 7.2% 15.9% 26.1% 38.4%
Takeshi Yokoyama 49 16.3% 24.5% 34.7% 74.5%
長浜鴻緒 46 8.7% 19.6% 23.9% 95.0%
Keita Tosaki 40 15.0% 32.5% 50.0% 58.8%
Yuji Tannai 25 8.0% 24.0% 28.0% 23.2%
Yutaka Take 17 5.9% 41.2% 52.9% 20.6%
菅原明良 10 0.0% 0.0% 10.0% 0.0%
Kazuo Yokoyama 9 22.2% 55.6% 77.8% 74.4%
Nozomi Iwata 7 0.0% 0.0% 14.3% 0.0%

Key Jockey Breakdown: Turf × Dirt × Year

▶ Junji Shimada

Year Turf Starts Turf Win% Turf Place% Turf Show% Turf ROI Dirt Starts Dirt Win% Dirt Place% Dirt Show% Dirt ROI
2023 31 3.2% 12.9% 12.9% 69.4% 14 0.0% 7.1% 14.3% 0.0%
2024 26 3.8% 15.4% 19.2% 20.0% 17 5.9% 23.5% 41.2% 52.4%
2025 37 8.1% 8.1% 10.8% 721.1% 19 0.0% 5.3% 15.8% 0.0%
Total 94 5.3% 11.7% 13.8% 312.2% 50 2.0% 12.0% 24.0% 17.8%

▶ Christophe Lemaire

Year Turf Starts Turf Win% Turf Place% Turf Show% Turf ROI Dirt Starts Dirt Win% Dirt Place% Dirt Show% Dirt ROI
2023 23 30.4% 30.4% 52.2% 77.0% 9 11.1% 33.3% 33.3% 57.8%
2024 21 19.0% 47.6% 47.6% 39.5% 9 11.1% 44.4% 44.4% 18.9%
2025 24 29.2% 66.7% 87.5% 71.7% 2 50.0% 100.0% 100.0% 140.0%
Total 68 26.5% 48.5% 63.2% 63.5% 20 15.0% 45.0% 45.0% 48.5%

▶ Hiroki Ishikawa

Year Turf Starts Turf Win% Turf Place% Turf Show% Turf ROI Dirt Starts Dirt Win% Dirt Place% Dirt Show% Dirt ROI
2023 12 0.0% 8.3% 8.3% 0.0% 8 0.0% 12.5% 25.0% 0.0%
2024 16 6.2% 12.5% 37.5% 25.6% 11 9.1% 18.2% 18.2% 58.2%
2025 15 13.3% 26.7% 40.0% 76.7% 7 14.3% 14.3% 14.3% 64.3%
Total 43 7.0% 16.3% 30.2% 36.3% 26 7.7% 15.4% 19.2% 41.9%

▶ Takeshi Yokoyama

Year Turf Starts Turf Win% Turf Place% Turf Show% Turf ROI Dirt Starts Dirt Win% Dirt Place% Dirt Show% Dirt ROI
2023 16 12.5% 25.0% 31.2% 49.4% 5 20.0% 20.0% 40.0% 106.0%
2024 10 20.0% 30.0% 30.0% 54.0% 3 0.0% 0.0% 33.3% 0.0%
2025 7 28.6% 28.6% 57.1% 97.1% 8 12.5% 25.0% 25.0% 138.8%
Total 33 18.2% 27.3% 36.4% 60.9% 16 12.5% 18.8% 31.2% 102.5%

▶ 長浜鴻緒

Year Turf Starts Turf Win% Turf Place% Turf Show% Turf ROI Dirt Starts Dirt Win% Dirt Place% Dirt Show% Dirt ROI
2023
2024 14 7.1% 14.3% 21.4% 87.9% 9 22.2% 22.2% 22.2% 196.7%
2025 12 0.0% 16.7% 25.0% 0.0% 11 9.1% 27.3% 27.3% 124.5%
Total 26 3.8% 15.4% 23.1% 47.3% 20 15.0% 25.0% 25.0% 157.0%

▶ Keita Tosaki

Year Turf Starts Turf Win% Turf Place% Turf Show% Turf ROI Dirt Starts Dirt Win% Dirt Place% Dirt Show% Dirt ROI
2023 12 8.3% 25.0% 58.3% 69.2%
2024 17 23.5% 41.2% 58.8% 76.5% 1 0.0% 0.0% 0.0% 0.0%
2025 9 11.1% 33.3% 33.3% 24.4% 1 0.0% 0.0% 0.0% 0.0%
Total 38 15.8% 34.2% 52.6% 61.8% 2 0.0% 0.0% 0.0% 0.0%

▶ Yuji Tannai

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% 60.0% 60.0% 58.0% 1 0.0% 0.0% 0.0% 0.0%
2024 10 0.0% 0.0% 0.0% 0.0% 2 0.0% 50.0% 50.0% 0.0%
2025 6 16.7% 33.3% 50.0% 48.3% 1 0.0% 0.0% 0.0% 0.0%
Total 21 9.5% 23.8% 28.6% 27.6% 4 0.0% 25.0% 25.0% 0.0%

▶ Yutaka Take

Year Turf Starts Turf Win% Turf Place% Turf Show% Turf ROI Dirt Starts Dirt Win% Dirt Place% Dirt Show% Dirt ROI
2023 2 0.0% 50.0% 50.0% 0.0%
2024 7 0.0% 57.1% 71.4% 0.0% 1 100.0% 100.0% 100.0% 350.0%
2025 7 0.0% 14.3% 28.6% 0.0%
Total 16 0.0% 37.5% 50.0% 0.0% 1 100.0% 100.0% 100.0% 350.0%

▶ 菅原明良

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% 20.0% 0.0%
2024 2 0.0% 0.0% 0.0% 0.0%
2025 3 0.0% 0.0% 0.0% 0.0%
Total 10 0.0% 0.0% 10.0% 0.0%

▶ Kazuo Yokoyama

Year Turf Starts Turf Win% Turf Place% Turf Show% Turf ROI Dirt Starts Dirt Win% Dirt Place% Dirt Show% Dirt ROI
2023
2024 5 20.0% 60.0% 100.0% 88.0%
2025 4 25.0% 50.0% 50.0% 57.5%
Total 9 22.2% 55.6% 77.8% 74.4%

▶ Nozomi Iwata

Year Turf Starts Turf Win% Turf Place% Turf Show% Turf ROI Dirt Starts Dirt Win% Dirt Place% Dirt Show% Dirt ROI
2023 1 0.0% 0.0% 0.0% 0.0%
2024 4 0.0% 0.0% 25.0% 0.0%
2025 2 0.0% 0.0% 0.0% 0.0%
Total 7 0.0% 0.0% 14.3% 0.0%

Grade Race Performance (G1 / G2 / G3)

G1

Year Starts Win% Place% Show% Win ROI
2023 7 14.3% 28.6% 57.1% 74.3%
2024 8 0.0% 25.0% 25.0% 0.0%
2025 15 6.7% 20.0% 26.7% 18.0%
Total 30 6.7% 23.3% 33.3% 26.3%
Jockey Starts Win% Place% Show% Win ROI
Takeshi Yokoyama 9 11.1% 33.3% 55.6% 57.8%
Christophe Lemaire 5 20.0% 40.0% 60.0% 54.0%
Yutaka Take 3 0.0% 33.3% 33.3% 0.0%
Junji Shimada 1 0.0% 0.0% 0.0% 0.0%
Keita Tosaki 1 0.0% 0.0% 0.0% 0.0%
Yuji Tannai 1 0.0% 0.0% 0.0% 0.0%

G2

Year Starts Win% Place% Show% Win ROI
2023 16 6.2% 12.5% 31.2% 15.6%
2024 6 0.0% 16.7% 33.3% 0.0%
2025 10 0.0% 0.0% 10.0% 0.0%
Total 32 3.1% 9.4% 25.0% 7.8%
Jockey Starts Win% Place% Show% Win ROI
Christophe Lemaire 5 20.0% 20.0% 40.0% 50.0%
Takeshi Yokoyama 3 0.0% 33.3% 66.7% 0.0%
Yutaka Take 3 0.0% 33.3% 66.7% 0.0%
Junji Shimada 2 0.0% 0.0% 0.0% 0.0%
Yuji Tannai 2 0.0% 0.0% 0.0% 0.0%
菅原明良 1 0.0% 0.0% 0.0% 0.0%

G3

Year Starts Win% Place% Show% Win ROI
2023 7 14.3% 28.6% 28.6% 38.6%
2024 15 6.7% 20.0% 20.0% 31.3%
2025 13 15.4% 23.1% 46.2% 46.9%
Total 35 11.4% 22.9% 31.4% 38.6%
Jockey Starts Win% Place% Show% Win ROI
Christophe Lemaire 6 16.7% 16.7% 50.0% 78.3%
Junji Shimada 3 0.0% 0.0% 0.0% 0.0%
Yuji Tannai 2 0.0% 0.0% 0.0% 0.0%
Yutaka Take 2 0.0% 100.0% 100.0% 0.0%
Takeshi Yokoyama 1 100.0% 100.0% 100.0% 270.0%
Keita Tosaki 1 0.0% 0.0% 0.0% 0.0%
菅原明良 1 0.0% 0.0% 0.0% 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.

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