Official NHA Assessment
Race 7: RACEHORSE OWNERS ASSOCIATION MR 81 HANDICAP (Open)
Line Horse
Atkinson Grimshaw
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
4 / 8
Within 2 points
Significant Diffs
2 / 8
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Secret Is Ours 4 56.0 1 0.00 2.5 73 70 73 +0 2 King's Crusade 4 59.5 2 1.00 2.5 80 81 81 +1 3 Irish Rain 4 57.5 3 1.05 2.5 76 77 77 +1 4 Atkinson Grimshaw 4 58.5 4 1.55 2.5 78 78 78 +0 5 Alado's Pride 7 55.5 5 3.30 0.0 72 75 75 +3 6 Waiting For Summer 3 60.0 6 3.80 5.0 81 74 74 -7 7 Twice To Heaven 3 59.5 7 4.05 5.0 80 73 73 -7 99 Assured 4 59.5 99 0.00 2.5 - 77 77 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Secret Is Ours | 73 | 66 | 73 | -7 | 2.5 | - | |
| 2 | King's Crusade | 80 | 81 | 81 | ✓ Match | 2.5 | - | |
| 3 | Irish Rain | 76 | 71 | 77 | -6 | 2.5 | - | |
| 4 | Atkinson Grimshaw Line | 78 | 75 | 78 | -3 | 2.5 | ||
| 5 | Alado's Pride | 72 | 73 | 75 | -2 | 0.0 | - | |
| 6 | Waiting For Summer | 81 | 79 | 74 | +5 | 5.0 | - | |
| 7 | Twice To Heaven | 80 | 72 | 73 | -1 | 5.0 | - | |
| 99 | Assured | - | 76 | 77 | -1 | 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