Official NHA Assessment
Race 1: CATERCRAFT MAIDEN PLATE (Maiden Plate Colts & Geldings to carry)
Line Horse
Apache Gold
Reference for assessment
Exact Matches
1 / 5
Calculated = Official
Close Matches
3 / 5
Within 2 points
Significant Diffs
2 / 5
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Buster Barnes 2 57.0 1 0.00 0.5 - 48 6 +6 2 Count Moderna 3 60.0 2 10.00 1.5 - 52 52 +52 3 Apache Gold 3 60.0 3 11.50 1.5 52 52 52 +0 4 Jumped A Red 2 54.5 4 13.25 0.5 - 43 43 +43 5 I Got The Secret 3 57.5 5 18.25 1.5 - 47 47 +47 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Buster Barnes | - | 101 | 6 | +95 | 0.5 | - | |
| 2 | Count Moderna | - | 54 | 52 | +2 | 1.5 | - | |
| 3 | Apache Gold Line | 52 | 52 | 52 | ✓ Match | 1.5 | ||
| 4 | Jumped A Red | - | 42 | 43 | -1 | 0.5 | - | |
| 5 | I Got The Secret | - | 21 | 47 | -26 | 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