Official NHA Assessment
Race 6: DAHLIA PLATE (Listed) (For 2 year-olds. R100 000 Win BSA Bonus Series)
Line Horse
None identified
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
0 / 7
Within 2 points
Significant Diffs
7 / 7
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Luna Halo 4 57.5 1 0.00 0.0 - - - +0 2 Golden Sickle 4 56.5 2 0.10 0.0 - - - +0 3 Joy And Peace 4 56.5 3 0.60 0.0 - - - +0 4 Summer Odyssey 2 56.5 4 1.85 1.5 - - - +0 5 Vision Of Wonder 2 60.0 5 2.35 1.5 - - - +0 6 The Winter Lake 4 59.0 6 2.60 0.0 - - - +0 7 Global Force 2 59.0 7 6.35 1.5 - - - +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Luna Halo | - | 106 | - | +106 | 0.0 | - | |
| 2 | Golden Sickle | - | 121 | - | +121 | 0.0 | - | |
| 3 | Joy And Peace | - | 110 | - | +110 | 0.0 | - | |
| 4 | Summer Odyssey | - | 84 | - | +84 | 1.5 | - | |
| 5 | Vision Of Wonder | - | 87 | - | +87 | 1.5 | - | |
| 6 | The Winter Lake | - | 87 | - | +87 | 0.0 | - | |
| 7 | Global Force | - | 80 | - | +80 | 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