Official NHA Assessment
Race 4: www.tabgold.co.za MAIDEN PLATE (F & M) (For Maiden Fillies & Mares)
Line Horse
American Style
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
2 / 7
Within 2 points
Significant Diffs
4 / 7
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Ventriloquist 4 58.5 1 0.00 1.5 48 60 54 +6 2 American Style 3 60.0 2 0.25 3.5 59 59 59 +0 3 Sexy Shiraz 3 60.0 3 5.65 3.5 58 59 59 +1 4 Deltron Energy 3 60.0 4 7.35 3.5 48 59 59 +11 5 Top Ten 4 56.0 5 7.40 1.5 50 55 55 +5 6 View The Roses 3 60.0 6 10.80 3.5 49 59 59 +10 99 Let The Sun Shine 3 60.0 99 0.00 3.5 - 59 59 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Ventriloquist | 48 | 46 | 54 | -8 | 1.5 | - | |
| 2 | American Style Line | 59 | 60 | 59 | +1 | 3.5 | ||
| 3 | Sexy Shiraz | 58 | 57 | 59 | -2 | 3.5 | - | |
| 4 | Deltron Energy | 48 | 48 | 59 | -11 | 3.5 | - | |
| 5 | Top Ten | 50 | 50 | 55 | -5 | 1.5 | - | |
| 6 | View The Roses | 49 | 50 | 59 | -9 | 3.5 | - | |
| 99 | Let The Sun Shine | - | 48 | 59 | -11 | 3.5 | - |
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