Official NHA Assessment
Race 4: CLASSIFIED STAKES (For horses with nett rating of 71 and below)
Line Horse
Jardin
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
2 / 6
Within 2 points
Significant Diffs
4 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Enrapture 5 57.5 1 0.00 0.0 68 68 68 +0 2 Jardin 6 53.5 2 4.00 0.0 61 61 61 +0 3 Cool Solution 9 56.0 3 5.00 0.0 61 65 65 +4 4 Mackelroy 4 56.0 4 10.00 1.0 71 63 63 -8 5 Assume 3 50.0 5 99.99 2.0 55 49 49 -6 99 Black Duke 5 58.0 99 0.00 0.0 - 69 69 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Enrapture | 68 | 82 | 68 | +14 | 0.0 | - | |
| 2 | Jardin Line | 61 | 60 | 61 | -1 | 0.0 | ||
| 3 | Cool Solution | 61 | 51 | 65 | -14 | 0.0 | - | |
| 4 | Mackelroy | 71 | 70 | 63 | +7 | 1.0 | - | |
| 5 | Assume | 55 | 58 | 49 | +9 | 2.0 | - | |
| 99 | Black Duke | - | 67 | 69 | -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