Official NHA Assessment
Race 7: BYERLEY TURK (Grade 3) (For 3 year olds)
Line Horse
Captain Casey
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
8 / 8
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Strawberry Bear 2 54.0 1 0.00 0.0 99 100 100 +1 2 Cousin Casey 2 60.0 2 0.60 0.0 122 117 117 -5 3 Jimmy Don 2 54.0 3 0.65 0.0 116 105 106 -10 4 Captain Casey 2 54.0 4 1.55 0.0 103 103 103 +0 5 Kitchakal 5 54.0 5 3.45 0.0 90 101 101 +11 6 Gold Index 3 54.0 6 4.85 2.0 78 96 96 +18 7 Imposing 2 54.0 7 5.15 0.0 100 100 100 +0 8 Aerial Display 5 54.5 8 7.55 0.0 82 101 101 +19 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Strawberry Bear | 99 | 106 | 100 | +6 | 0.0 | - | |
| 2 | Cousin Casey | 122 | 125 | 117 | +8 | 0.0 | - | |
| 3 | Jimmy Don | 116 | 112 | 106 | +6 | 0.0 | - | |
| 4 | Captain Casey Line | 103 | 96 | 103 | -7 | 0.0 | ||
| 5 | Kitchakal | 90 | 86 | 101 | -15 | 0.0 | - | |
| 6 | Gold Index | 78 | 53 | 96 | -43 | 2.0 | - | |
| 7 | Imposing | 100 | 107 | 100 | +7 | 0.0 | - | |
| 8 | Aerial Display | 82 | 68 | 101 | -33 | 0.0 | - |
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