Official NHA Assessment
Race 7: COCA COLA FILLIES CLASSIC (3 year old Fillies)
Line Horse
Jacky Sparrow
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
1 / 6
Within 2 points
Significant Diffs
5 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Jacky Sparrow 3 58.0 1 0.00 2.0 82 82 82 +0 2 Zavannahgold 2 58.0 2 0.25 0.0 75 86 86 +11 3 Walking Thru Time 3 58.0 3 1.00 2.0 58 86 86 +28 4 Coffeeberry 5 58.0 4 1.00 0.0 75 90 90 +15 5 My Secret Place 5 58.0 5 1.00 0.0 48 90 90 +42 6 Duchess Of War 2 58.0 6 3.00 0.0 55 88 88 +33 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Jacky Sparrow Line | 82 | 80 | 82 | -2 | 2.0 | ||
| 2 | Zavannahgold | 75 | 78 | 86 | -8 | 0.0 | - | |
| 3 | Walking Thru Time | 58 | 73 | 86 | -13 | 2.0 | - | |
| 4 | Coffeeberry | 75 | 72 | 90 | -18 | 0.0 | - | |
| 5 | My Secret Place | 48 | 71 | 90 | -19 | 0.0 | - | |
| 6 | Duchess Of War | 55 | 55 | 88 | -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