Official NHA Assessment
Race 1: WELCOME TO NELSON MANDELA BAY JUVENILE PLATE (For 2 yo R100 000 Win CRS Bonus)
Line Horse
None identified
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
0 / 6
Within 2 points
Significant Diffs
5 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Ready 2 60.0 1 0.00 1.0 - - - +0 2 Augusta Rosso 2 57.5 2 1.75 1.0 - - - +0 3 Above The Horizon 2 60.0 3 2.00 1.0 - - - +0 4 Rock Of Futura 2 57.0 4 5.50 1.0 - - - +0 5 Air Born Lady 2 55.0 5 12.75 1.0 - - - +0 99 North Star 2 57.5 99 0.00 1.0 - - - +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Ready | - | 95 | - | +95 | 1.0 | - | |
| 2 | Augusta Rosso | - | 86 | - | +86 | 1.0 | - | |
| 3 | Above The Horizon | - | 86 | - | +86 | 1.0 | - | |
| 4 | Rock Of Futura | - | 72 | - | +72 | 1.0 | - | |
| 5 | Air Born Lady | - | 78 | - | +78 | 1.0 | - | |
| 99 | North Star | - | 85 | - | - | 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