Official NHA Assessment
Race 4: www.caperacing.co.za MAIDEN SPECIAL WEIGHTS (For all Maidens)
Line Horse
Donder Storm
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
3 / 7
Within 2 points
Significant Diffs
3 / 7
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Innamorare 5 56.0 1 0.00 0.0 - 60 6 +6 2 Donder Storm 3 57.0 2 1.75 0.5 64 64 64 +0 3 Admiral's Ransom 3 55.5 3 1.95 0.5 61 61 61 +0 4 Double Duet 3 59.0 4 5.45 0.5 68 65 65 -3 5 Barnbougle 3 60.0 5 10.45 0.5 - 67 67 +67 99 Sudden Song 3 59.0 99 0.00 0.5 - 65 65 +0 99 Forever Bill 3 54.0 99 0.00 0.5 - 55 55 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Innamorare | - | 91 | 6 | +85 | 0.0 | - | |
| 2 | Donder Storm Line | 64 | 63 | 64 | -1 | 0.5 | ||
| 3 | Admiral's Ransom | 61 | 48 | 61 | -13 | 0.5 | - | |
| 4 | Double Duet | 68 | 62 | 65 | -3 | 0.5 | - | |
| 5 | Barnbougle | - | 66 | 67 | -1 | 0.5 | - | |
| 99 | Sudden Song | - | 71 | 65 | +6 | 0.5 | - | |
| 99 | Forever Bill | - | 56 | 55 | +1 | 0.5 | - |
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