Official NHA Assessment
Race 5: MERIT RATED 85 HANDICAP (Open)
Line Horse
Bugatti Blue
Reference for assessment
Exact Matches
1 / 6
Calculated = Official
Close Matches
2 / 6
Within 2 points
Significant Diffs
3 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Obscure 4 52.0 1 0.00 2.0 67 60 67 +0 2 Bugatti Blue 7 62.5 2 1.50 0.0 90 90 90 +0 3 Heir Line 8 58.0 3 1.60 0.0 81 81 81 +0 4 Citrusdal 8 58.5 4 2.10 0.0 82 82 82 +0 5 Three To Tango 6 60.0 5 4.60 0.0 85 81 81 -4 6 At The Office 6 55.0 6 99.99 0.0 73 70 70 -3 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Obscure | 67 | 87 | 67 | +20 | 2.0 | - | |
| 2 | Bugatti Blue Line | 90 | 87 | 90 | -3 | 0.0 | ||
| 3 | Heir Line | 81 | 81 | 81 | ✓ Match | 0.0 | - | |
| 4 | Citrusdal | 82 | 81 | 82 | -1 | 0.0 | - | |
| 5 | Three To Tango | 85 | 87 | 81 | +6 | 0.0 | - | |
| 6 | At The Office | 73 | 45 | 70 | -25 | 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