Official NHA Assessment
Race 4: CLASSIFIED STAKES 80 (For horses with nett rating of 80 and below)
Line Horse
Red Top
Reference for assessment
Exact Matches
0 / 5
Calculated = Official
Close Matches
3 / 5
Within 2 points
Significant Diffs
2 / 5
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Var Aglow 5 57.0 1 0.00 0.0 69 69 69 +0 2 Red Top 5 57.0 2 1.25 0.0 69 69 69 +0 3 Regulate 3 60.0 3 2.00 5.0 76 65 66 -10 4 Kallipos 3 58.0 4 3.50 5.0 71 61 61 -10 5 Justadoreher 5 56.0 5 29.50 0.0 68 67 67 -1 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Var Aglow | 69 | 84 | 69 | +15 | 0.0 | - | |
| 2 | Red Top Line | 69 | 70 | 69 | +1 | 0.0 | ||
| 3 | Regulate | 76 | 79 | 66 | +13 | 5.0 | - | |
| 4 | Kallipos | 71 | 63 | 61 | +2 | 5.0 | - | |
| 5 | Justadoreher | 68 | 68 | 67 | +1 | 0.0 | - |
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