Official NHA Assessment
Race 6: SILVER SLIPPER (Listed) (For all 3 yr old Fillies/ 2nd Leg Triple Tiara)
Line Horse
Walking Thru Time
Reference for assessment
Exact Matches
0 / 5
Calculated = Official
Close Matches
0 / 5
Within 2 points
Significant Diffs
5 / 5
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Zavannahgold 2 58.0 1 0.00 0.0 81 65 65 -16 2 Walking Thru Time 3 58.0 2 3.00 1.5 64 64 64 +0 3 My Secret Place 5 58.0 3 5.50 0.0 52 65 65 +13 4 Coffeeberry 5 58.0 4 5.55 0.0 73 65 65 -8 99 Jacky Sparrow 3 58.0 99 0.00 1.5 - 62 62 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Zavannahgold | 81 | 78 | 65 | +13 | 0.0 | - | |
| 2 | Walking Thru Time Line | 64 | 73 | 64 | +9 | 1.5 | ||
| 3 | My Secret Place | 52 | 71 | 65 | +6 | 0.0 | - | |
| 4 | Coffeeberry | 73 | 72 | 65 | +7 | 0.0 | - | |
| 99 | Jacky Sparrow | - | 80 | 62 | +18 | 1.5 | - |
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