Official NHA Assessment
Race 2: SHOPPERS' CHOICE GRADUATION PLATE (Maidens,1 & 2 time winners)
Line Horse
Regulate
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
1 / 6
Within 2 points
Significant Diffs
5 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Admirals Chance 5 57.5 1 0.00 0.0 71 71 70 -1 2 Regulate 3 60.0 2 0.25 1.5 73 73 73 +0 3 Duchess Of War 2 53.5 3 0.30 0.0 55 68 68 +13 4 Powder Puff 4 54.5 4 2.30 0.5 58 66 66 +8 5 Chetan 3 54.5 5 4.05 1.5 47 63 63 +16 6 Coffeeberry 5 57.0 6 4.30 0.0 75 70 70 -5 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Admirals Chance | 71 | 77 | 70 | +7 | 0.0 | - | |
| 2 | Regulate Line | 73 | 79 | 73 | +6 | 1.5 | ||
| 3 | Duchess Of War | 55 | 55 | 68 | -13 | 0.0 | - | |
| 4 | Powder Puff | 58 | 58 | 66 | -8 | 0.5 | - | |
| 5 | Chetan | 47 | 45 | 63 | -18 | 1.5 | - | |
| 6 | Coffeeberry | 75 | 72 | 70 | +2 | 0.0 | - |
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