Official NHA Assessment
Race 2: LUCKY FISH LUCKY BREAK MAIDEN PLATE (F & M) (For Maiden Fillies & Mares)
Line Horse
Vaans Spirit
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
7 / 8
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Vaans Spirit 3 60.0 1 0.00 2.5 72 72 72 +0 2 Vixens War 2 60.0 2 0.90 0.0 69 81 81 +12 3 Dancing In Demark 2 57.5 3 3.20 0.0 64 74 74 +10 4 Magical Spring 3 60.0 4 9.70 2.5 62 72 72 +10 5 Chaos Queen 3 60.0 5 12.90 2.5 - 72 72 +72 6 A M C Rose 4 58.5 6 22.80 1.0 - 72 72 +72 7 A M C Labree 3 58.5 7 54.20 2.5 - 69 69 +69 99 Surely Not 3 60.0 99 0.00 2.5 - 72 72 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Vaans Spirit Line | 72 | 72 | 72 | ✓ Match | 2.5 | ||
| 2 | Vixens War | 69 | 69 | 81 | -12 | 0.0 | - | |
| 3 | Dancing In Demark | 64 | 64 | 74 | -10 | 0.0 | - | |
| 4 | Magical Spring | 62 | 62 | 72 | -10 | 2.5 | - | |
| 5 | Chaos Queen | - | - | 72 | -72 | 2.5 | - | |
| 6 | A M C Rose | - | - | 72 | -72 | 1.0 | - | |
| 7 | A M C Labree | - | - | 69 | -69 | 2.5 | - | |
| 99 | Surely Not | - | 60 | 72 | -12 | 2.5 | - |
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