Official NHA Assessment
Race 1: 4RACING WELCOMES YOU 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 Caroline Island 2 57.5 1 0.00 4.0 - - - +0 2 Arashi 2 57.5 2 1.30 4.0 - - - +0 3 Zacatoo 2 60.0 3 1.80 4.0 - - - +0 4 Bingo 2 58.5 4 4.00 4.0 - - - +0 5 Winchester 2 58.5 5 8.00 4.0 - - - +0 6 Fortunate Son 2 60.0 6 19.25 4.0 - - - +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Caroline Island | - | 88 | - | +88 | 4.0 | - | |
| 2 | Arashi | - | 90 | - | +90 | 4.0 | - | |
| 3 | Zacatoo | - | 88 | - | +88 | 4.0 | - | |
| 4 | Bingo | - | 81 | - | +81 | 4.0 | - | |
| 5 | Winchester | - | 69 | - | +69 | 4.0 | - | |
| 6 | Fortunate Son | - | 58 | - | +58 | 4.0 | - |
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