Official NHA Assessment
Race 2: MERIT RATED 60 HANDICAP (Open)
Line Horse
Ginjamatinja
Reference for assessment
Exact Matches
1 / 6
Calculated = Official
Close Matches
4 / 6
Within 2 points
Significant Diffs
1 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Mill Creek 7 57.0 1 0.00 0.0 51 51 51 +0 2 Karoo Winter 4 59.0 2 0.75 0.5 55 58 58 +3 3 Ginjamatinja 3 53.0 3 2.00 0.5 45 45 45 +0 4 Manvir 3 58.5 4 4.50 0.5 56 53 53 -3 5 Cario 4 53.0 5 4.75 0.5 43 42 42 -1 6 Mustatheef 3 60.0 6 5.25 0.5 59 56 56 -3 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Mill Creek | 51 | 55 | 51 | +4 | 0.0 | - | |
| 2 | Karoo Winter | 55 | 56 | 58 | -2 | 0.5 | - | |
| 3 | Ginjamatinja Line | 45 | 45 | 45 | ✓ Match | 0.5 | ||
| 4 | Manvir | 56 | 52 | 53 | -1 | 0.5 | - | |
| 5 | Cario | 43 | 41 | 42 | -1 | 0.5 | - | |
| 6 | Mustatheef | 59 | 42 | 56 | -14 | 0.5 | - |
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