Official NHA Assessment
Race 2: TAB 4RACING APP MAIDEN PLATE (F & M) (For Maiden F & M. R15 000 Win bonus ROA Members)
Line Horse
Heartlight
Reference for assessment
Exact Matches
1 / 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 Piton De Neige 4 59.0 1 0.00 10.0 62 53 53 -9 2 Si Gioca 2 59.0 2 1.00 5.5 70 62 62 -8 3 Heartlight 2 56.0 3 4.00 5.5 56 56 56 +0 4 Best Intentions 2 59.0 4 5.00 5.5 71 62 62 -9 5 Rain Bird 2 59.0 5 5.50 5.5 - 62 62 +62 6 Happy Vibes 3 60.0 6 7.75 8.5 64 58 58 -6 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Piton De Neige | 62 | 57 | 53 | +4 | 10.0 | - | |
| 2 | Si Gioca | 70 | 62 | 62 | ✓ Match | 5.5 | - | |
| 3 | Heartlight Line | 56 | 48 | 56 | -8 | 5.5 | ||
| 4 | Best Intentions | 71 | 67 | 62 | +5 | 5.5 | - | |
| 5 | Rain Bird | - | 70 | 62 | +8 | 5.5 | - | |
| 6 | Happy Vibes | 64 | 59 | 58 | +1 | 8.5 | - |
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