Official NHA Assessment
Race 3: ONE LAST TRICK GRADUATION PLATE (Maidens,1 & 2 time winners)
Line Horse
Tom's Diner
Reference for assessment
Exact Matches
1 / 6
Calculated = Official
Close Matches
1 / 6
Within 2 points
Significant Diffs
5 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Guerra 4 60.0 1 0.00 7.0 81 76 70 -11 2 Tom's Diner 4 57.5 2 3.00 7.0 71 71 71 +0 3 Force Eight 3 57.5 3 3.75 6.0 96 73 86 -10 4 Queen Of Fire 3 55.0 4 7.25 6.0 81 68 71 -10 99 Trustfall 3 55.0 99 0.00 6.0 - 68 68 +0 99 Gypsy Express 5 54.5 99 0.00 0.0 - 79 79 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Guerra | 81 | 86 | 70 | +16 | 7.0 | - | |
| 2 | Tom's Diner Line | 71 | 94 | 71 | +23 | 7.0 | ||
| 3 | Force Eight | 96 | 77 | 86 | -9 | 6.0 | - | |
| 4 | Queen Of Fire | 81 | 71 | 71 | ✓ Match | 6.0 | - | |
| 99 | Trustfall | - | 62 | 68 | -6 | 6.0 | - | |
| 99 | Gypsy Express | - | 58 | 79 | -21 | 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