Official NHA Assessment
Race 7: Zimbabwe Oaks (L) (Oaks)
Line Horse
Cutback
Reference for assessment
Exact Matches
0 / 4
Calculated = Official
Close Matches
0 / 4
Within 2 points
Significant Diffs
4 / 4
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Empress Of Jade 3 58.0 1 0.00 2.0 50 69 56 +6 2 Cutback 6 58.0 2 0.05 0.0 73 73 73 +0 3 Tigers Eagle 3 58.0 3 8.05 2.0 71 69 69 -2 4 Midfield Girl 3 58.0 4 16.05 2.0 63 69 69 +6 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Empress Of Jade | 50 | 73 | 56 | +17 | 2.0 | - | |
| 2 | Cutback Line | 73 | 63 | 73 | -10 | 0.0 | ||
| 3 | Tigers Eagle | 71 | 79 | 69 | +10 | 2.0 | - | |
| 4 | Midfield Girl | 63 | 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