Official NHA Assessment
Race 5: 4RACING.TV GUINEAS PLATE (3 year olds)
Line Horse
Dammi
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
3 / 8
Within 2 points
Significant Diffs
4 / 8
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Pure Maverick 2 58.0 1 0.00 0.0 89 71 71 -18 2 Perfection 3 58.0 2 1.25 6.0 77 63 67 -10 3 Indy View 2 58.0 3 1.30 0.0 79 74 74 -5 4 Double Destiny 2 55.0 4 3.05 0.0 91 67 81 -10 5 Dammi 2 60.0 5 8.30 0.0 75 75 75 +0 6 Onnetilia 2 55.0 6 9.80 0.0 66 65 65 -1 7 Lord Tennyson 2 58.0 7 23.30 0.0 72 71 71 -1 8 Fortune Of Gold 2 56.5 8 32.55 0.0 73 68 68 -5 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Pure Maverick | 89 | 94 | 71 | +23 | 0.0 | - | |
| 2 | Perfection | 77 | 103 | 67 | +36 | 6.0 | - | |
| 3 | Indy View | 79 | 76 | 74 | +2 | 0.0 | - | |
| 4 | Double Destiny | 91 | 77 | 81 | -4 | 0.0 | - | |
| 5 | Dammi Line | 75 | 55 | 75 | -20 | 0.0 | ||
| 6 | Onnetilia | 66 | 64 | 65 | -1 | 0.0 | - | |
| 7 | Lord Tennyson | 72 | 69 | 71 | -2 | 0.0 | - | |
| 8 | Fortune Of Gold | 73 | 60 | 68 | -8 | 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