Official NHA Assessment
Race 1: BUSTER BARNES MAIDEN PLATE (Maiden Plate Colts & Geldings to carry)
Line Horse
House Of Lords
Reference for assessment
Exact Matches
1 / 5
Calculated = Official
Close Matches
2 / 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 Magic Exists 3 60.0 1 0.00 4.5 - - - +0 2 Forever Royal 4 57.5 2 10.00 5.0 45 -6 35 -10 3 House Of Lords 3 60.0 3 15.00 4.5 - - - +0 4 Philosopher King 3 60.0 4 99.00 4.5 - - - +0 99 What's Her Name 3 57.5 99 0.00 4.5 - -5 -5 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Magic Exists | - | 91 | - | +91 | 4.5 | - | |
| 2 | Forever Royal | 45 | 36 | 35 | +1 | 5.0 | - | |
| 3 | House Of Lords Line | - | 49 | - | +49 | 4.5 | ||
| 4 | Philosopher King | - | - | - | ✓ Match | 4.5 | - | |
| 99 | What's Her Name | - | - | -5 | +5 | 4.5 | - |
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