Official NHA Assessment
Race 4: WSB GRAND HERITAGE 20 DECEMBER MAIDEN PLATE (For all Maidens)
Line Horse
Naretoi
Reference for assessment
Exact Matches
0 / 15
Calculated = Official
Close Matches
1 / 15
Within 2 points
Significant Diffs
12 / 15
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Real Stunner 3 60.0 1 0.00 7.0 70 51 51 -19 2 Naretoi 2 60.0 2 6.75 0.0 65 65 65 +0 3 Heroic Act 3 56.0 3 9.25 7.0 65 43 55 -10 4 Stokesy 3 58.0 4 11.75 7.0 - 47 47 +47 5 Culturati 3 58.0 5 13.45 7.0 - 47 47 +47 6 Onceinabluemoon 2 54.5 6 13.55 0.0 72 54 62 -10 7 Anahita 3 54.5 7 15.65 7.0 - 40 40 +40 8 World Order 2 58.0 8 15.70 0.0 79 61 69 -10 9 King Of Silk 3 58.0 9 19.40 7.0 73 47 63 -10 10 Truro Legacy 3 58.0 10 24.00 7.0 - 47 47 +47 11 Jet O War 3 58.0 11 24.25 7.0 - 47 47 +47 12 Elusive Charm 2 58.0 12 27.50 0.0 67 61 61 -6 13 Arizona Magic 4 60.0 13 99.99 3.5 67 58 58 -9 99 Equilateral 3 58.0 99 0.00 7.0 - 47 47 +0 99 Mirror Flection 3 60.0 99 0.00 7.0 - 51 51 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Real Stunner | 70 | 74 | 51 | +23 | 7.0 | - | |
| 2 | Naretoi Line | 65 | 73 | 65 | +8 | 0.0 | ||
| 3 | Heroic Act | 65 | 65 | 55 | +10 | 7.0 | - | |
| 4 | Stokesy | - | 81 | 47 | +34 | 7.0 | - | |
| 5 | Culturati | - | 85 | 47 | +38 | 7.0 | - | |
| 6 | Onceinabluemoon | 72 | 75 | 62 | +13 | 0.0 | - | |
| 7 | Anahita | - | 72 | 40 | +32 | 7.0 | - | |
| 8 | World Order | 79 | 84 | 69 | +15 | 0.0 | - | |
| 9 | King Of Silk | 73 | 68 | 63 | +5 | 7.0 | - | |
| 10 | Truro Legacy | - | 60 | 47 | +13 | 7.0 | - | |
| 11 | Jet O War | - | 52 | 47 | +5 | 7.0 | - | |
| 12 | Elusive Charm | 67 | 62 | 61 | +1 | 0.0 | - | |
| 13 | Arizona Magic | 67 | 66 | 58 | +8 | 3.5 | - | |
| 99 | Equilateral | - | 82 | 47 | +35 | 7.0 | - | |
| 99 | Mirror Flection | - | 68 | 51 | +17 | 7.0 | - |
Assessment Methodology
Calculation Steps:
- Identify Line Horse - consistent performer used as reference
- Calculate WFA Allowance based on age, distance, and month
- Apply Drag Adjustment for beaten margin
- Calculate Actual Weight Performance:
Weight - Drag - WFA - Compare to Line Horse to determine race rating
- Apply special rules (maiden caps, layoff allowance)
Key Formulas:
- Drag Effect: Varies by distance (see Benchmarks page)
- 1 length ≈ 1kg at 1 mile (1600m)
- WFA Scale: Based on Admiral Rous's 1855 table
- Rating Points: 1kg = 2 rating points