NAKAYAMA VERIFICATION REPORT
Nakayama Racecourse April 19
Selected Picks — Results Verification
Sunday, April 19, 2026 | WHGR Keiba System Verification Report
8
Total
Picks
Picks
1st
G1 Satsuki-sho
Robchen
Robchen
25%
Place Rate
2 of 8
2 of 8
64%
Combined
Return Rate
Return Rate
This report is a post-hoc verification of the published pre-race picks article (Nakayama Selected Picks, April 19). Return rates are calculated via a hypothetical flat-stake scenario (JPY 100 win + JPY 100 place on each recommended horse).
★ HIGHLIGHT: Satsuki-sho Winner — Robchen
1st
Nakayama R11
86th Satsuki-sho (G1) Turf 2000m
ROBCHEN (1st favorite)
Jockey: Hiroaki Matsuyama | Trainer: Haruki Sugiyama [Grade A]
1:56.5
Course Record
W1F 11.3s [A3 Grade]Special Signal
Payouts: Win JPY 400 | Place JPY 170 | JPY 100 stake returned JPY 570 (net +JPY 370 across win/place)
In the pre-race article Robchen was placed in the Special Signal section (training-only evaluation, outside WHGR threshold). The listed reason was the Sugiyama stable’s W1F 11.3s Wood gallop (A3-grade benchmark). The horse, sent off as the top favorite, won in course-record time. This case is recorded as an example where the training signal corroborated a favourite’s actual win.
○ PLACE HIT: Wing Blue
2nd
Nakayama R5
3YO 1-Win Class | Turf 1600m
WING BLUE (3rd favorite)
Jockey: Kosei Miura | Trainer: Makoto Saito [Reference]
+JPY 460
Place Payout
W1F 11.2s [A3 Grade]WHGR +100 ◎
Grade-A pick based on the Saito Makoto stable’s A3-grade W1F 11.2s and rider WHGR +100. Finished 2nd as 3rd favorite, paying JPY 460 on the place. All two horses recommended on the A3-grade signal (W1F ≤ 11.3s) today finished in the money (Robchen 1st, Wing Blue 2nd).
■ Combined Results — All Picks
| Number of picks | 8 (A◎ 7, Special 1) |
| Total stake (flat simulation) | JPY 1,600 (Win 100 + Place 100 × 8) |
| Win hits | 1 / 8 (12.5%) |
| Place hits | 2 / 8 (25.0%) |
| Win return | JPY 400 (return rate 50%) |
| Place return | JPY 630 (return rate 79%) |
| Net P/L | -JPY 570 (combined return 64%) |
■ Performance by Signal Type
| Signal Type | Count | Place Hits | Return |
|---|---|---|---|
| W1F ≤ 11.3s (A3 Grade) | 2 | 2/2 | 258% |
| Uphill full-lap acceleration | 3 | 0/3 | 0% |
| W1F 11.5s | 3 | 0/3 | 0% |
Top-performing signal today: W1F ≤ 11.3s (A3 Grade) — 2 of 2 picks in the money, 258% simulated return. Recorded as a weighting-reference data point for future signal calibration.
■ All Picks — Result List
| Result | R | Horse | Jockey | Trainer | Fav | Finish | Return |
|---|---|---|---|---|---|---|---|
| ◎ | 11R | Robchen | Matsuyama | Sugiyama [A] | 1 | 1 | +570 |
| ○ | 5R | Wing Blue | Miura | Saito Makoto [Ref] | 3 | 2 | +460 |
| × | 11R | Ask Edinburgh | Iwata Y. | Fukunaga [Ref] | 12 | 4 | 0 |
| × | 4R | Indomitability | Nishimura J. | Sugiyama [A] | 2 | 6 | 0 |
| × | 9R | Angel Mark | Iwata M. | Miyata [A] | 6 | 6 | 0 |
| × | 5R | Grillon Voeur | Lemaire | Miyata [A] | 1 | 8 | 0 |
| × | 11R | Road Phileur | Take Y. | Yoshioka [A] | 15 | 16 | 0 |
| × | 11R | Altramus | Yokoyama T. | Nonaka [Ref] | 13 | 17 | 0 |
■ Record of the Day
- G1 Satsuki-sho — Robchen 1st (top favorite, course record): Special-signal pick (W1F 11.3s A3 grade) matched the race winner. Win JPY 400 + Place JPY 170.
- Nakayama R5 — Wing Blue 2nd (3rd favorite): A-grade A3-signal pick paid JPY 460 on the place.
- Signal W1F ≤ 11.3s (A3 Grade) delivered 2 of 2 place hits today, with a simulated return of 258%.
- Conversely, the W1F 11.5s signal (3 picks) and the uphill full-lap acceleration signal (3 picks) produced no places.
- Combined flat-stake return rate across all recommendations was 64% (net loss).
This report is a post-race summary and does not constitute a guarantee of future hits. The WHGR Keiba System aims to make its statistical edge visible through the steady accumulation of verification reports.
WHGR KEIBA SYSTEM
White & Green Co., Ltd. | Verification Report 2026/04/19