Official NHA Assessment
Race 1: WELCOME TO NELSON MANDELA BAY MAIDEN JUVENILE PLATE (Fillies) (For 2 year old fillies)
Line Horse
None identified
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
8 / 8
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Peace Frog 2 60.0 1 0.00 0.5 - - - +0 2 Josi Mo 2 60.0 2 0.50 0.5 - - - +0 3 The Lady Love 2 60.0 3 2.00 0.5 - - - +0 4 Bella Attrice 2 60.0 4 3.25 0.5 - - - +0 5 Swiftwinged 2 60.0 5 3.50 0.5 - - - +0 6 Magmalicious 2 60.0 6 5.75 0.5 - - - +0 7 Lady D'arbanville 2 60.0 7 7.00 0.5 - - - +0 8 Time For Katie 2 60.0 8 7.75 0.5 - - - +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Peace Frog | - | 71 | - | +71 | 0.5 | - | |
| 2 | Josi Mo | - | 56 | - | +56 | 0.5 | - | |
| 3 | The Lady Love | - | 63 | - | +63 | 0.5 | - | |
| 4 | Bella Attrice | - | 66 | - | +66 | 0.5 | - | |
| 5 | Swiftwinged | - | 62 | - | +62 | 0.5 | - | |
| 6 | Magmalicious | - | 61 | - | +61 | 0.5 | - | |
| 7 | Lady D'arbanville | - | 70 | - | +70 | 0.5 | - | |
| 8 | Time For Katie | - | 52 | - | +52 | 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