Official NHA Assessment
Race 1: WELCOME TO NELSON MANDELA BAY JUVENILE PLATE (For 2 yo R100 000 Win BSA / RCS Bonus)
Line Horse
None identified
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
0 / 8
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Master Mtoto 2 60.0 1 0.00 2.5 - - - +0 2 U S Ranger 2 60.0 2 1.00 2.5 - - - +0 3 First Officer 2 60.0 3 2.25 2.5 - - - +0 4 Global Thriller 2 57.0 4 7.75 2.5 - - - +0 5 Fyfield Legend 2 57.0 5 8.00 2.5 - - - +0 6 Grey Eagle (GB) 2 57.0 6 12.50 2.5 - - - +0 7 The Judge 2 57.0 7 12.75 2.5 - - - +0 8 Secret Eruption 2 57.0 8 18.25 2.5 - - - +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Master Mtoto | - | - | - | - | 2.5 | - | |
| 2 | U S Ranger | - | - | - | - | 2.5 | - | |
| 3 | First Officer | - | - | - | - | 2.5 | - | |
| 4 | Global Thriller | - | - | - | - | 2.5 | - | |
| 5 | Fyfield Legend | - | - | - | - | 2.5 | - | |
| 6 | Grey Eagle (GB) | - | - | - | - | 2.5 | - | |
| 7 | The Judge | - | - | - | - | 2.5 | - | |
| 8 | Secret Eruption | - | - | - | - | 2.5 | - |
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