Official NHA Assessment
Race 1: WELCOME TO NELSON MANDELA BAY MAIDEN JUVENILE PLATE (For 2 yo R100 000 Win BSA / CRS Bonus)
Line Horse
None identified
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
0 / 6
Within 2 points
Significant Diffs
6 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Jet Set Run 2 57.5 1 0.00 1.5 - - - +0 2 River Fern 2 60.0 2 0.50 1.5 - - - +0 3 Ivy 2 57.5 3 1.00 1.5 - - - +0 4 Priceless Treasure 2 57.5 4 2.00 1.5 - - - +0 5 Wishes And Dreams 2 57.5 5 4.25 1.5 - - - +0 6 Mind Freeze 2 57.5 6 99.99 1.5 - - - +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Jet Set Run | - | 80 | - | +80 | 1.5 | - | |
| 2 | River Fern | - | 73 | - | +73 | 1.5 | - | |
| 3 | Ivy | - | 67 | - | +67 | 1.5 | - | |
| 4 | Priceless Treasure | - | 70 | - | +70 | 1.5 | - | |
| 5 | Wishes And Dreams | - | 88 | - | +88 | 1.5 | - | |
| 6 | Mind Freeze | - | 72 | - | +72 | 1.5 | - |
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