Official NHA Assessment
Race 3: MERIT RATED 63 HANDICAP (Open)
Line Horse
Captive Moon
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
0 / 6
Within 2 points
Significant Diffs
4 / 6
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 63 58 63 +0 2 Captive Moon 6 58.0 2 0.50 0.0 59 59 59 +0 3 Duchess Of War 2 60.0 3 2.50 0.0 63 60 60 -3 4 Days Gone By 3 54.5 4 10.50 5.0 52 37 42 -10 5 When Evening Comes 5 58.5 5 12.50 0.0 60 55 55 -5 99 Jackonory 3 56.5 99 0.00 5.0 - 41 41 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Bruce's Spirit | 63 | 55 | 63 | -8 | 0.0 | - | |
| 2 | Captive Moon Line | 59 | 75 | 59 | +16 | 0.0 | ||
| 3 | Duchess Of War | 63 | 55 | 60 | -5 | 0.0 | - | |
| 4 | Days Gone By | 52 | 51 | 42 | +9 | 5.0 | - | |
| 5 | When Evening Comes | 60 | 58 | 55 | +3 | 0.0 | - | |
| 99 | Jackonory | - | 56 | 41 | +15 | 5.0 | - |
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