Official NHA Assessment
Race 1: JOIN THE MTC MAIDEN PLATE (Maiden Plate Colts & Geldings to carry)
Line Horse
Firefly Lane
Reference for assessment
Exact Matches
1 / 6
Calculated = Official
Close Matches
3 / 6
Within 2 points
Significant Diffs
3 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Princess Lucy 3 57.5 1 0.00 5.0 - 41 6 +6 2 Robin Of Locksley 3 60.0 2 1.25 5.0 - 46 46 +46 3 Firefly Lane 2 57.5 3 3.00 3.5 44 44 44 +0 4 Hidden Wonder 3 57.5 4 4.75 5.0 - 41 41 +41 5 Exodus Song 2 57.5 5 4.80 3.5 45 44 44 -1 6 Queen Of Montmatre 3 57.5 6 5.55 5.0 - 41 41 +41 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Princess Lucy | - | 52 | 6 | +46 | 5.0 | - | |
| 2 | Robin Of Locksley | - | 75 | 46 | +29 | 5.0 | - | |
| 3 | Firefly Lane Line | 44 | 44 | 44 | ✓ Match | 3.5 | ||
| 4 | Hidden Wonder | - | - | 41 | -41 | 5.0 | - | |
| 5 | Exodus Song | 45 | 43 | 44 | -1 | 3.5 | - | |
| 6 | Queen Of Montmatre | - | 39 | 41 | -2 | 5.0 | - |
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