Official NHA Assessment
Race 5: MERIT RATED 64 HANDICAP (Open)
Line Horse
Deposition
Reference for assessment
Exact Matches
1 / 7
Calculated = Official
Close Matches
1 / 7
Within 2 points
Significant Diffs
2 / 7
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Kursk (AUS) 6 60.0 1 0.00 0.0 64 63 64 +0 2 Centre Stage 5 50.0 2 0.50 0.0 49 48 48 -1 3 Deposition 6 60.0 3 3.50 0.0 64 64 64 +0 4 Viscountess Vivien 6 60.0 4 8.50 0.0 64 63 63 -1 5 State Your Case 3 48.0 5 14.50 3.5 50 32 40 -10 6 Ian's Ferrari 3 54.5 6 19.50 3.5 60 45 50 -10 7 Manvir 3 53.0 7 20.00 3.5 57 42 47 -10 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Kursk (AUS) | 64 | 67 | 64 | +3 | 0.0 | - | |
| 2 | Centre Stage | 49 | 52 | 48 | +4 | 0.0 | - | |
| 3 | Deposition Line | 64 | 68 | 64 | +4 | 0.0 | ||
| 4 | Viscountess Vivien | 64 | 72 | 63 | +9 | 0.0 | - | |
| 5 | State Your Case | 50 | 40 | 40 | ✓ Match | 3.5 | - | |
| 6 | Ian's Ferrari | 60 | 63 | 50 | +13 | 3.5 | - | |
| 7 | Manvir | 57 | 52 | 47 | +5 | 3.5 | - |
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