Official NHA Assessment
Race 4: PINNACLE PLATE (85) (Race for all horses)
Line Horse
Fortuna Doro
Reference for assessment
Exact Matches
1 / 6
Calculated = Official
Close Matches
2 / 6
Within 2 points
Significant Diffs
4 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Seven Seas 5 57.5 1 0.00 0.0 82 90 88 +6 2 Fortuna Doro 6 52.0 2 5.00 0.0 79 79 79 +0 3 Wijdaan 5 56.0 3 10.00 0.0 75 87 87 +12 4 Three To Tango 6 62.0 4 15.00 0.0 85 99 99 +14 5 Butchie Boy 7 59.0 5 99.00 0.0 78 93 93 +15 99 Ultra Edge 4 57.5 99 0.00 2.0 - 86 86 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Seven Seas | 82 | 90 | 88 | +2 | 0.0 | - | |
| 2 | Fortuna Doro Line | 79 | 79 | 79 | ✓ Match | 0.0 | ||
| 3 | Wijdaan | 75 | 73 | 87 | -14 | 0.0 | - | |
| 4 | Three To Tango | 85 | 87 | 99 | -12 | 0.0 | - | |
| 5 | Butchie Boy | 78 | 78 | 93 | -15 | 0.0 | - | |
| 99 | Ultra Edge | - | 80 | 86 | -6 | 2.0 | - |
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