Official NHA Assessment
Race 2: MWOS FEDERAL MERIT RATED 70 HANDICAP (Open)
Line Horse
Cutback
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
1 / 6
Within 2 points
Significant Diffs
5 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Deposition 6 53.5 1 0.00 0.0 57 56 57 +0 2 Cutback 6 60.5 2 3.00 0.0 72 72 72 +0 3 Sun Bird 3 55.5 3 3.50 6.0 62 49 52 -10 4 Qunetra 4 57.0 4 15.50 3.0 64 57 57 -7 5 Keen Spirit 3 60.5 5 99.00 6.0 72 58 62 -10 99 Viscountess Vivien 6 61.0 99 0.00 0.0 - 71 71 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Deposition | 57 | 68 | 57 | +11 | 0.0 | - | |
| 2 | Cutback Line | 72 | 63 | 72 | -9 | 0.0 | ||
| 3 | Sun Bird | 62 | 87 | 52 | +35 | 6.0 | - | |
| 4 | Qunetra | 64 | 83 | 57 | +26 | 3.0 | - | |
| 5 | Keen Spirit | 72 | 71 | 62 | +9 | 6.0 | - | |
| 99 | Viscountess Vivien | - | 72 | 71 | +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