Official NHA Assessment
Race 1: MAIDEN PLATE (Maiden Plate Colts & Geldings to carry)
Line Horse
Evocative
Reference for assessment
Exact Matches
0 / 5
Calculated = Official
Close Matches
0 / 5
Within 2 points
Significant Diffs
5 / 5
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Jackonory 3 60.0 1 0.00 8.5 - 55 6 +6 2 Evocative 3 57.5 2 2.00 8.5 50 50 50 +0 3 Red Orchid 3 57.5 3 3.75 8.5 48 50 50 +2 4 I Got The Secret 3 57.5 4 13.75 8.5 - 50 50 +50 5 Jumped A Red 2 56.5 5 18.75 5.5 52 54 54 +2 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Jackonory | - | 56 | 6 | +50 | 8.5 | - | |
| 2 | Evocative Line | 50 | 44 | 50 | -6 | 8.5 | ||
| 3 | Red Orchid | 48 | 43 | 50 | -7 | 8.5 | - | |
| 4 | I Got The Secret | - | 21 | 50 | -29 | 8.5 | - | |
| 5 | Jumped A Red | 52 | 42 | 54 | -12 | 5.5 | - |
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