Official NHA Assessment
Race 3: CIVIL AVIATION AUTHORITY OF ZIMBABWE MERIT RATED 80 HANDICAP (Open)
Line Horse
Kallipos
Reference for assessment
Exact Matches
3 / 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 Red Top 5 55.0 1 0.00 0.0 70 73 70 +0 2 Kallipos 3 56.0 2 1.50 1.5 72 72 72 +0 3 Ultimate Jewel 5 60.0 3 1.60 0.0 80 83 83 +3 4 Forgotten Time 3 58.0 4 2.80 1.5 76 76 76 +0 5 Jusrite 3 54.5 5 3.50 1.5 69 69 69 +0 6 Jacky Sparrow 3 60.0 6 7.15 1.5 80 80 80 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Red Top | 70 | 70 | 70 | ✓ Match | 0.0 | - | |
| 2 | Kallipos Line | 72 | 63 | 72 | -9 | 1.5 | ||
| 3 | Ultimate Jewel | 80 | 80 | 83 | -3 | 0.0 | - | |
| 4 | Forgotten Time | 76 | 76 | 76 | ✓ Match | 1.5 | - | |
| 5 | Jusrite | 69 | 68 | 69 | -1 | 1.5 | - | |
| 6 | Jacky Sparrow | 80 | 80 | 80 | ✓ Match | 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