Official NHA Assessment
Race 1: MADIGAN BORROWDALE D STAKES 68 (For All Horses with a nett rating of 68 & below)
Line Horse
Duchess Of War
Reference for assessment
Exact Matches
0 / 5
Calculated = Official
Close Matches
1 / 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 My Secret Place 5 57.5 1 0.00 0.0 67 66 66 -1 2 Duchess Of War 2 54.5 2 3.00 0.0 62 62 62 +0 3 Bruce's Spirit 6 58.5 3 5.50 0.0 65 68 68 +3 4 Karvani 7 60.0 4 9.50 0.0 68 71 71 +3 5 New Galaxy 4 50.0 5 9.60 1.0 52 49 49 -3 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | My Secret Place | 67 | 71 | 66 | +5 | 0.0 | - | |
| 2 | Duchess Of War Line | 62 | 55 | 62 | -7 | 0.0 | ||
| 3 | Bruce's Spirit | 65 | 55 | 68 | -13 | 0.0 | - | |
| 4 | Karvani | 68 | 73 | 71 | +2 | 0.0 | - | |
| 5 | New Galaxy | 52 | 45 | 49 | -4 | 1.0 | - |
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