Official NHA Assessment
Race 7: ZIMBABWE DERBY (GRADE 3) (For 3-year-olds/ 3rd Leg Triple Crown)
Line Horse
Cordobesa
Reference for assessment
Exact Matches
1 / 5
Calculated = Official
Close Matches
1 / 5
Within 2 points
Significant Diffs
4 / 5
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Tigers Eagle 3 54.5 1 0.00 2.0 71 69 69 -2 2 Cordobesa 3 54.5 2 2.50 2.0 73 73 73 +0 3 Cutback 6 54.5 3 6.50 0.0 73 73 73 +0 4 Master Ming 3 58.0 4 99.00 2.0 46 76 76 +30 99 Midfield Girl 3 54.5 99 0.00 2.0 - 69 69 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Tigers Eagle | 71 | 79 | 69 | +10 | 2.0 | - | |
| 2 | Cordobesa Line | 73 | 73 | 73 | ✓ Match | 2.0 | ||
| 3 | Cutback | 73 | 63 | 73 | -10 | 0.0 | - | |
| 4 | Master Ming | 46 | 46 | 76 | -30 | 2.0 | - | |
| 99 | Midfield Girl | - | 59 | 69 | -10 | 2.0 | - |
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