Official NHA Assessment
Race 1: 4RACING WELCOMES YOU JUVENILE PLATE (Fillies) (For 2 yof R100 000 Win BSA / RCS Bonus)
Line Horse
None identified
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
0 / 6
Within 2 points
Significant Diffs
0 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Griselda 2 57.0 1 0.00 3.0 - - - +0 2 Lanzarote 2 57.0 2 1.25 3.0 - - - +0 3 Queen Leila 2 57.0 3 3.50 3.0 - - - +0 4 Custodian 2 60.0 4 6.75 3.0 - - - +0 99 Miss Dutton 2 55.5 99 0.00 3.0 - - - +0 99 Viking Lass 2 57.0 99 0.00 3.0 - - - +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Griselda | - | - | - | - | 3.0 | - | |
| 2 | Lanzarote | - | - | - | - | 3.0 | - | |
| 3 | Queen Leila | - | - | - | - | 3.0 | - | |
| 4 | Custodian | - | - | - | - | 3.0 | - | |
| 99 | Miss Dutton | - | - | - | - | 3.0 | - | |
| 99 | Viking Lass | - | - | - | - | 3.0 | - |
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