Official NHA Assessment
Race 8: TAB 4RACING APP MR 84 HANDICAP (Open)
Line Horse
Esquevelle
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
6 / 8
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Halberdier 4 56.5 1 0.00 4.0 77 84 77 +0 2 His Lordship 3 58.5 2 0.80 3.5 81 89 89 +8 3 Esquevelle 3 57.0 3 2.80 3.5 86 86 86 +0 4 Turbo Power 3 60.0 4 4.10 3.5 84 92 92 +8 5 Hemisphere 3 59.5 5 4.30 3.5 83 91 91 +8 6 Rockaroundtheclock 2 57.5 6 5.70 2.5 84 89 89 +5 7 Banyan 3 58.5 7 8.60 3.5 86 89 89 +3 99 Biofarmer 4 57.0 99 0.00 4.0 - 85 85 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Halberdier | 77 | 83 | 77 | +6 | 4.0 | - | |
| 2 | His Lordship | 81 | 85 | 89 | -4 | 3.5 | - | |
| 3 | Esquevelle Line | 86 | 86 | 86 | ✓ Match | 3.5 | ||
| 4 | Turbo Power | 84 | 83 | 92 | -9 | 3.5 | - | |
| 5 | Hemisphere | 83 | 83 | 91 | -8 | 3.5 | - | |
| 6 | Rockaroundtheclock | 84 | 83 | 89 | -6 | 2.5 | - | |
| 7 | Banyan | 86 | 83 | 89 | -6 | 3.5 | - | |
| 99 | Biofarmer | - | 78 | 85 | -7 | 4.0 | - |
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