Official NHA Assessment
Race 4: MY HAPPY PLACE PINNACLE PLATE (90) (Race for all horses)
Line Horse
Zazu
Reference for assessment
Exact Matches
2 / 5
Calculated = Official
Close Matches
3 / 5
Within 2 points
Significant Diffs
1 / 5
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Citrusdal 8 55.5 1 0.00 0.0 77 81 81 +4 2 Zazu 6 50.0 2 0.05 0.0 70 70 70 +0 3 Three To Tango 6 58.5 3 5.05 0.0 87 87 87 +0 4 Tigers Eagle 3 53.5 4 7.55 4.0 83 69 73 -10 5 Bugatti Blue 7 60.0 5 8.05 0.0 90 90 90 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Citrusdal | 77 | 81 | 81 | ✓ Match | 0.0 | - | |
| 2 | Zazu Line | 70 | 71 | 70 | +1 | 0.0 | ||
| 3 | Three To Tango | 87 | 87 | 87 | ✓ Match | 0.0 | - | |
| 4 | Tigers Eagle | 83 | 79 | 73 | +6 | 4.0 | - | |
| 5 | Bugatti Blue | 90 | 87 | 90 | -3 | 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