Official NHA Assessment
Race 7: ECONO AGRI 100 (PTY) LTD MR 80 HANDICAP (Open)
Line Horse
Alingalonga
Reference for assessment
Exact Matches
1 / 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 Silver Tycoon 7 54.0 1 0.00 0.0 68 79 68 +0 2 Eyjafjallajokull 2 57.0 2 0.05 0.0 74 85 85 +11 3 Alingalonga 4 61.5 3 3.30 6.0 83 83 83 +0 4 Timbavati River 3 58.5 4 4.55 8.5 77 71 71 -6 5 American Dream 3 56.0 5 5.30 8.5 72 66 66 -6 6 Scampton 2 56.5 6 5.40 0.0 74 84 84 +10 7 Atkinson Grimshaw 4 58.0 7 5.90 6.0 76 75 75 -1 8 Final Edition 5 56.0 8 8.40 0.0 72 83 83 +11 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Silver Tycoon | 68 | 74 | 68 | +6 | 0.0 | - | |
| 2 | Eyjafjallajokull | 74 | 86 | 85 | +1 | 0.0 | - | |
| 3 | Alingalonga Line | 83 | 82 | 83 | -1 | 6.0 | ||
| 4 | Timbavati River | 77 | 79 | 71 | +8 | 8.5 | - | |
| 5 | American Dream | 72 | 81 | 66 | +15 | 8.5 | - | |
| 6 | Scampton | 74 | 70 | 84 | -14 | 0.0 | - | |
| 7 | Atkinson Grimshaw | 76 | 75 | 75 | ✓ Match | 6.0 | - | |
| 8 | Final Edition | 72 | 78 | 83 | -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