Official NHA Assessment
Race 3: MERIT RATED 75 HANDICAP (Open)
Line Horse
Viscountess Vivien
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
0 / 6
Within 2 points
Significant Diffs
4 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Tulip Way 5 59.5 1 0.00 0.0 74 70 74 +0 2 Tradition 4 60.0 2 0.50 1.0 75 74 74 -1 3 Viscountess Vivien 6 54.5 3 1.00 0.0 64 64 64 +0 4 Deposition 6 52.0 4 2.25 0.0 64 58 58 -6 5 Peaceable 4 56.0 5 10.25 1.0 67 61 61 -6 99 Pacific Duke 4 58.5 99 0.00 1.0 - 66 66 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Tulip Way | 74 | 80 | 74 | +6 | 0.0 | - | |
| 2 | Tradition | 75 | 77 | 74 | +3 | 1.0 | - | |
| 3 | Viscountess Vivien Line | 64 | 72 | 64 | +8 | 0.0 | ||
| 4 | Deposition | 64 | 68 | 58 | +10 | 0.0 | - | |
| 5 | Peaceable | 67 | 65 | 61 | +4 | 1.0 | - | |
| 99 | Pacific Duke | - | 49 | 66 | -17 | 1.0 | - |
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