Official NHA Assessment
Race 2: TAB MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)
Line Horse
None identified
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
0 / 7
Within 2 points
Significant Diffs
5 / 7
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Silver Screen 2 57.0 1 0.00 0.5 - - - +0 2 Gimme's Lassie 5 57.0 2 1.50 0.0 - - - +0 3 Rafeef's Choice 5 57.0 3 3.00 0.0 - - - +0 4 Ella's Delight 2 57.0 4 6.00 0.5 - - - +0 5 Dracma 3 60.0 5 13.25 1.5 - - - +0 99 Sophia Raie 2 57.0 99 0.00 0.5 - - - +0 99 Medlers Tart 2 57.0 99 0.00 0.5 - - - +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Silver Screen | - | 70 | - | +70 | 0.5 | - | |
| 2 | Gimme's Lassie | - | 101 | - | +101 | 0.0 | - | |
| 3 | Rafeef's Choice | - | 71 | - | +71 | 0.0 | - | |
| 4 | Ella's Delight | - | 71 | - | +71 | 0.5 | - | |
| 5 | Dracma | - | 43 | - | +43 | 1.5 | - | |
| 99 | Sophia Raie | - | - | - | - | 0.5 | - | |
| 99 | Medlers Tart | - | 92 | - | - | 0.5 | - |
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