Official NHA Assessment
Race 6: MERIT RATED 88 HANDICAP (Open)
Line Horse
Heir Line
Reference for assessment
Exact Matches
1 / 6
Calculated = Official
Close Matches
3 / 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 Armstrong 6 56.0 1 0.00 0.0 88 75 88 +0 2 Heir Line 8 56.5 2 0.50 0.0 81 81 81 +0 3 Jubilee 7 54.0 3 3.00 0.0 81 73 73 -8 4 Three To Tango 6 56.5 4 3.05 0.0 81 78 78 -3 5 At The Office 6 52.5 5 7.05 0.0 73 68 68 -5 6 Citrusdal 8 57.0 6 24.05 0.0 82 77 77 -5 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Armstrong | 88 | 89 | 88 | +1 | 0.0 | - | |
| 2 | Heir Line Line | 81 | 81 | 81 | ✓ Match | 0.0 | ||
| 3 | Jubilee | 81 | 72 | 73 | -1 | 0.0 | - | |
| 4 | Three To Tango | 81 | 87 | 78 | +9 | 0.0 | - | |
| 5 | At The Office | 73 | 45 | 68 | -23 | 0.0 | - | |
| 6 | Citrusdal | 82 | 81 | 77 | +4 | 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