Official NHA Assessment
Race 5: ZIMBABWE 2000 (Grade 3) (For 3 yr olds/ 2nd Leg Triple Crown)
Line Horse
King's Crown
Reference for assessment
Exact Matches
1 / 5
Calculated = Official
Close Matches
1 / 5
Within 2 points
Significant Diffs
2 / 5
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 River Power 3 58.0 1 0.00 3.5 78 73 73 -5 2 Shes Everything 3 55.5 2 0.50 3.5 76 75 75 -1 3 King's Crown 3 58.0 3 5.50 3.5 73 73 73 +0 4 Solartrip 3 58.0 4 7.50 3.5 63 73 73 +10 5 Burn Bright 3 55.5 5 10.00 3.5 62 68 68 +6 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | River Power | 78 | 97 | 73 | +24 | 3.5 | - | |
| 2 | Shes Everything | 76 | 71 | 75 | -4 | 3.5 | - | |
| 3 | King's Crown Line | 73 | 79 | 73 | +6 | 3.5 | ||
| 4 | Solartrip | 63 | 77 | 73 | +4 | 3.5 | - | |
| 5 | Burn Bright | 62 | 68 | 68 | ✓ Match | 3.5 | - |
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