Official NHA Assessment
Race 1: 4RACING WELCOMES YOU MR 86 HANDICAP (Open)
Line Horse
Apache Son
Reference for assessment
Exact Matches
1 / 6
Calculated = Official
Close Matches
1 / 6
Within 2 points
Significant Diffs
3 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Bellerophon 3 52.0 1 0.00 7.0 79 64 79 +0 2 Battleground 5 61.5 2 0.05 0.0 89 97 97 +8 3 Euphrates 3 50.5 3 5.05 7.0 67 61 61 -6 4 Apache Son 4 61.5 4 5.65 4.0 89 89 89 +0 5 Vesuvio 5 60.0 5 5.85 0.0 86 94 94 +8 6 Military Moves 2 52.0 6 25.25 0.0 78 78 78 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Bellerophon | 79 | 89 | 79 | +10 | 7.0 | - | |
| 2 | Battleground | 89 | 92 | 97 | -5 | 0.0 | - | |
| 3 | Euphrates | 67 | 70 | 61 | +9 | 7.0 | - | |
| 4 | Apache Son Line | 89 | 89 | 89 | ✓ Match | 4.0 | ||
| 5 | Vesuvio | 86 | 85 | 94 | -9 | 0.0 | - | |
| 6 | Military Moves | 78 | 75 | 78 | -3 | 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