Official NHA Assessment
Race 7: RACING240 FM 86 HANDICAP (F & M) (For Fillies and Mares)
Line Horse
Bosnay
Reference for assessment
Exact Matches
2 / 6
Calculated = Official
Close Matches
2 / 6
Within 2 points
Significant Diffs
2 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Royal City Girl 2 57.0 1 0.00 0.0 90 90 90 +0 2 Family Power 4 60.0 2 0.75 2.5 86 95 95 +9 3 Bosnay 4 50.0 3 1.50 2.5 74 74 74 +0 4 Exquisite 3 58.5 4 1.60 5.0 83 86 86 +3 5 White Waters 2 54.0 5 2.60 0.0 74 86 86 +12 6 Arabian Red 4 51.5 6 5.10 2.5 77 74 74 -3 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Royal City Girl | 90 | 93 | 90 | +3 | 0.0 | - | |
| 2 | Family Power | 86 | 87 | 95 | -8 | 2.5 | - | |
| 3 | Bosnay Line | 74 | 74 | 74 | ✓ Match | 2.5 | ||
| 4 | Exquisite | 83 | 83 | 86 | -3 | 5.0 | - | |
| 5 | White Waters | 74 | 73 | 86 | -13 | 0.0 | - | |
| 6 | Arabian Red | 77 | 74 | 74 | ✓ Match | 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