Official NHA Assessment
Race 7: FOR HOSPITALITY BOOKINGS CALL 011 681 1796 MR 85 HANDICAP (Open)
Line Horse
Deception Pass
Reference for assessment
Exact Matches
1 / 7
Calculated = Official
Close Matches
2 / 7
Within 2 points
Significant Diffs
1 / 7
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Palace Dancer 3 58.0 1 0.00 3.0 87 74 87 +0 2 Deception Pass 4 58.0 2 1.25 1.5 81 81 81 +0 3 Claw 4 60.0 3 2.25 1.5 85 84 84 -1 4 Willow Express 7 60.0 4 2.50 0.0 85 86 86 +1 5 Laughing William 5 55.5 5 6.00 0.0 76 75 75 -1 99 Rattle Bag 6 55.0 99 0.00 0.0 - 74 74 +0 99 Moola Man 4 59.5 99 0.00 1.5 - 80 80 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Palace Dancer | 87 | 88 | 87 | +1 | 3.0 | - | |
| 2 | Deception Pass Line | 81 | 77 | 81 | -4 | 1.5 | ||
| 3 | Claw | 85 | 91 | 84 | +7 | 1.5 | - | |
| 4 | Willow Express | 85 | 82 | 86 | -4 | 0.0 | - | |
| 5 | Laughing William | 76 | 75 | 75 | ✓ Match | 0.0 | - | |
| 99 | Rattle Bag | - | 71 | 74 | -3 | 0.0 | - | |
| 99 | Moola Man | - | 75 | 80 | -5 | 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