Official NHA Assessment
Race 5: PINNACLE PLATE 105 (Race for all horses.)
Line Horse
Var Aglow
Reference for assessment
Exact Matches
1 / 6
Calculated = Official
Close Matches
2 / 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 Tom's Diner 4 56.0 1 0.00 0.5 95 91 91 -4 2 Jet Mirage 3 60.0 2 0.75 1.5 110 101 101 -9 3 Guerra 4 50.0 3 0.80 0.5 84 83 83 -1 4 Var Aglow 5 56.0 4 1.05 0.0 96 96 96 +0 5 Admirals Chance 5 52.0 5 12.05 0.0 87 84 84 -3 6 Abayyaan 3 58.0 6 22.05 1.5 104 93 94 -10 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Tom's Diner | 95 | 94 | 91 | +3 | 0.5 | - | |
| 2 | Jet Mirage | 110 | 100 | 101 | -1 | 1.5 | - | |
| 3 | Guerra | 84 | 86 | 83 | +3 | 0.5 | - | |
| 4 | Var Aglow Line | 96 | 84 | 96 | -12 | 0.0 | ||
| 5 | Admirals Chance | 87 | 77 | 84 | -7 | 0.0 | - | |
| 6 | Abayyaan | 104 | 94 | 94 | ✓ Match | 1.5 | - |
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