Official NHA Assessment
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Line Horse
Bossy Boots
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
7 / 8
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Bossy Boots 4 57.5 1 0.00 5.0 74 74 74 +0 2 Jumping Analia 2 57.5 2 0.25 3.0 67 78 78 +11 3 Waitforgreenlight 2 53.5 3 1.25 3.0 70 70 70 +0 4 La Chance 4 57.5 4 4.35 5.0 - 74 74 +74 5 Bregardt 4 60.0 5 5.10 5.0 70 79 79 +9 6 Angel Wings 3 57.5 6 5.85 4.5 48 75 75 +27 7 Trippis Tune 3 60.0 7 6.10 4.5 - 80 80 +80 8 Hat Man 4 60.0 8 6.35 5.0 64 79 79 +15 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Bossy Boots Line | 74 | 51 | 74 | -23 | 5.0 | ||
| 2 | Jumping Analia | 67 | 72 | 78 | -6 | 3.0 | - | |
| 3 | Waitforgreenlight | 70 | 67 | 70 | -3 | 3.0 | - | |
| 4 | La Chance | - | 54 | 74 | -20 | 5.0 | - | |
| 5 | Bregardt | 70 | 52 | 79 | -27 | 5.0 | - | |
| 6 | Angel Wings | 48 | 54 | 75 | -21 | 4.5 | - | |
| 7 | Trippis Tune | - | 70 | 80 | -10 | 4.5 | - | |
| 8 | Hat Man | 64 | 60 | 79 | -19 | 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