Official NHA Assessment
Race 1: HOLLYWOODBETS DURBANVILLE WELCOMES YOU MAIDEN JUVENILE PLATE (Fillies) (For 2 yof R100 000 Win BSA Bonus Series)
Line Horse
None identified
Reference for assessment
Exact Matches
1 / 13
Calculated = Official
Close Matches
1 / 13
Within 2 points
Significant Diffs
12 / 13
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Double Grand Slam 2 60.0 1 0.00 0.0 - - - +0 2 Jet To The Sun 4 60.0 2 4.50 1.5 - - - +0 3 Quick Trip 2 60.0 3 5.00 0.0 - - - +0 4 Nile The Boss 4 60.0 4 5.50 1.5 - - - +0 5 Fatal Gem 4 60.0 5 5.90 1.5 - - - +0 6 Windrunner 2 60.0 6 6.20 0.0 - - - +0 7 Golden Corn 2 60.0 7 8.70 0.0 - - - +0 8 More Than A Dream 2 60.0 8 9.00 0.0 - - - +0 9 Vandalise 2 60.0 9 9.50 0.0 - - - +0 10 Red Moon Rising 2 60.0 10 9.70 0.0 - - - +0 11 Lickety Split 2 60.0 11 10.45 0.0 - - - +0 12 Mrs Shackleton 2 60.0 12 13.95 0.0 - - - +0 13 Windward Passage 2 60.0 13 18.20 0.0 - - - +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Double Grand Slam | - | 122 | - | +122 | 0.0 | - | |
| 2 | Jet To The Sun | - | 78 | - | +78 | 1.5 | - | |
| 3 | Quick Trip | - | 82 | - | +82 | 0.0 | - | |
| 4 | Nile The Boss | - | 52 | - | +52 | 1.5 | - | |
| 5 | Fatal Gem | - | 91 | - | +91 | 1.5 | - | |
| 6 | Windrunner | - | 79 | - | +79 | 0.0 | - | |
| 7 | Golden Corn | - | 60 | - | +60 | 0.0 | - | |
| 8 | More Than A Dream | - | 61 | - | +61 | 0.0 | - | |
| 9 | Vandalise | - | 67 | - | +67 | 0.0 | - | |
| 10 | Red Moon Rising | - | 68 | - | +68 | 0.0 | - | |
| 11 | Lickety Split | - | 84 | - | +84 | 0.0 | - | |
| 12 | Mrs Shackleton | - | 50 | - | +50 | 0.0 | - | |
| 13 | Windward Passage | - | - | - | ✓ Match | 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