Official NHA Assessment
Race 3: WSB LIVE ROULETTE MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)
Line Horse
Portrayal
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 Portrayal 3 60.0 1 0.00 4.5 73 73 73 +0 2 Chyavana 3 60.0 2 0.10 4.5 - 73 73 +73 3 Jp Two Thousand 3 58.5 3 0.25 4.5 70 70 70 +0 4 Bevoeterd 3 60.0 4 3.00 4.5 68 73 73 +5 5 Eagle River 3 60.0 5 4.25 4.5 76 73 73 -3 6 Knave Of Diamonds 3 60.0 6 4.50 4.5 - 73 73 +73 7 Knock Twice 3 60.0 7 5.00 4.5 - 73 73 +73 8 Broadway 4 60.0 8 10.00 5.0 55 72 72 +17 9 Fill Your Boots 3 60.0 9 10.75 4.5 49 73 73 +24 10 Gone In Time 3 60.0 10 10.80 4.5 59 73 73 +14 11 Pianta 4 57.5 11 10.85 5.0 57 67 67 +10 12 That's A Fact 3 60.0 12 13.25 4.5 - 73 73 +73 99 Phantomoftheforest 3 60.0 99 0.00 4.5 - 73 73 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Portrayal Line | 73 | 73 | 73 | ✓ Match | 4.5 | ||
| 2 | Chyavana | - | 106 | 73 | +33 | 4.5 | - | |
| 3 | Jp Two Thousand | 70 | 61 | 70 | -9 | 4.5 | - | |
| 4 | Bevoeterd | 68 | 58 | 73 | -15 | 4.5 | - | |
| 5 | Eagle River | 76 | 66 | 73 | -7 | 4.5 | - | |
| 6 | Knave Of Diamonds | - | 57 | 73 | -16 | 4.5 | - | |
| 7 | Knock Twice | - | 55 | 73 | -18 | 4.5 | - | |
| 8 | Broadway | 55 | 59 | 72 | -13 | 5.0 | - | |
| 9 | Fill Your Boots | 49 | 57 | 73 | -16 | 4.5 | - | |
| 10 | Gone In Time | 59 | 54 | 73 | -19 | 4.5 | - | |
| 11 | Pianta | 57 | 60 | 67 | -7 | 5.0 | - | |
| 12 | That's A Fact | - | 53 | 73 | -20 | 4.5 | - | |
| 99 | Phantomoftheforest | - | 50 | 73 | -23 | 4.5 | - |
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