Official NHA Assessment
Race 3: GRADUATION PLATE (Maidens,1 & 2 time winners)
Line Horse
Admirals Chance
Reference for assessment
Exact Matches
1 / 5
Calculated = Official
Close Matches
3 / 5
Within 2 points
Significant Diffs
1 / 5
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Admirals Chance 5 60.0 1 0.00 0.0 75 75 75 +0 2 Regulate 3 60.0 2 2.00 7.0 73 64 64 -9 3 Nandine 3 57.0 3 6.00 7.0 59 55 55 -4 4 Jackonory 3 57.5 4 7.50 7.0 56 56 56 +0 5 Count Moderna 3 57.5 5 18.75 7.0 56 56 56 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Admirals Chance Line | 75 | 77 | 75 | +2 | 0.0 | ||
| 2 | Regulate | 73 | 79 | 64 | +15 | 7.0 | - | |
| 3 | Nandine | 59 | 60 | 55 | +5 | 7.0 | - | |
| 4 | Jackonory | 56 | 56 | 56 | ✓ Match | 7.0 | - | |
| 5 | Count Moderna | 56 | 54 | 56 | -2 | 7.0 | - |
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