Official NHA Assessment
Race 6: RACEHORSE OWNERS ASSOCIATION STAKES (Listed) (For 3 year-olds)
Line Horse
Augusta Rosso
Reference for assessment
Exact Matches
1 / 6
Calculated = Official
Close Matches
1 / 6
Within 2 points
Significant Diffs
4 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Golden Palm 2 60.0 1 0.00 0.0 110 94 94 -16 2 All Systems Go 3 58.5 2 6.75 8.0 79 75 75 -4 3 Augusta Rosso 2 56.0 3 10.50 0.0 86 86 86 +0 4 Arlu 2 58.5 4 12.75 0.0 92 91 91 -1 5 Wild Fig 2 58.5 5 15.00 0.0 78 91 91 +13 6 King Prawn 2 59.5 6 28.75 0.0 98 93 93 -5 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Golden Palm | 110 | 115 | 94 | +21 | 0.0 | - | |
| 2 | All Systems Go | 79 | 102 | 75 | +27 | 8.0 | - | |
| 3 | Augusta Rosso Line | 86 | 86 | 86 | ✓ Match | 0.0 | ||
| 4 | Arlu | 92 | 68 | 91 | -23 | 0.0 | - | |
| 5 | Wild Fig | 78 | 82 | 91 | -9 | 0.0 | - | |
| 6 | King Prawn | 98 | 98 | 93 | +5 | 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