Official NHA Assessment
Race 6: EAST CAPE GUINEAS (Listed) (For 3 y-o. 2nd Leg EC Sophomore Chall)
Line Horse
Heathcliff
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
0 / 6
Within 2 points
Significant Diffs
6 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Perfection 3 60.0 1 0.00 3.0 91 80 80 -11 2 Port Louis 2 60.0 2 3.75 0.0 110 87 100 -10 3 King Regent 3 60.0 3 5.50 3.0 105 80 95 -10 4 Heathcliff 2 60.0 4 8.75 0.0 86 86 86 +0 5 Dammi 2 60.0 5 8.85 0.0 76 86 86 +10 6 Zatara Magic 5 60.0 6 21.35 0.0 91 86 86 -5 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Perfection | 91 | 103 | 80 | +23 | 3.0 | - | |
| 2 | Port Louis | 110 | 106 | 100 | +6 | 0.0 | - | |
| 3 | King Regent | 105 | 106 | 95 | +11 | 3.0 | - | |
| 4 | Heathcliff Line | 86 | 100 | 86 | +14 | 0.0 | ||
| 5 | Dammi | 76 | 55 | 86 | -31 | 0.0 | - | |
| 6 | Zatara Magic | 91 | 114 | 86 | +28 | 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