Official NHA Assessment
Race 1: HEALTHPOINT HEALTH HAVENMAIDEN PLATE (Maiden Plate Colts & Geldings to carry)
Line Horse
My Secret Place
Reference for assessment
Exact Matches
0 / 5
Calculated = Official
Close Matches
3 / 5
Within 2 points
Significant Diffs
2 / 5
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Bruce's Spirit 6 60.0 1 0.00 0.0 50 59 56 +6 2 Red Top 5 59.0 2 3.50 0.0 - 58 58 +58 3 My Secret Place 5 56.0 3 6.00 0.0 51 51 51 +0 4 Elmhurst 2 59.0 4 6.75 0.0 56 57 57 +1 99 Dunstealmythunda 3 60.0 99 0.00 6.0 - 47 47 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Bruce's Spirit | 50 | 55 | 56 | -1 | 0.0 | - | |
| 2 | Red Top | - | 70 | 58 | +12 | 0.0 | - | |
| 3 | My Secret Place Line | 51 | 71 | 51 | +20 | 0.0 | ||
| 4 | Elmhurst | 56 | 56 | 57 | -1 | 0.0 | - | |
| 99 | Dunstealmythunda | - | 49 | 47 | +2 | 6.0 | - |
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