Official NHA Assessment
Race 3: VIMBAI CAPITAL MERIT RATED 79 HANDICAP (Open)
Line Horse
Ultimate Jewel
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
1 / 6
Within 2 points
Significant Diffs
4 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Coffeeberry 5 57.5 1 0.00 0.0 74 72 74 +0 2 Ultimate Jewel 5 58.0 2 3.00 0.0 75 75 75 +0 3 Walking Thru Time 3 55.5 3 5.00 2.0 70 64 64 -6 4 Aerial Display 5 59.5 4 6.00 0.0 78 76 76 -2 5 Ian's Ferrari 3 60.0 5 7.50 2.0 79 73 73 -6 6 Jacky Sparrow 3 59.5 6 16.50 2.0 78 72 72 -6 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Coffeeberry | 74 | 72 | 74 | -2 | 0.0 | - | |
| 2 | Ultimate Jewel Line | 75 | 80 | 75 | +5 | 0.0 | ||
| 3 | Walking Thru Time | 70 | 73 | 64 | +9 | 2.0 | - | |
| 4 | Aerial Display | 78 | 68 | 76 | -8 | 0.0 | - | |
| 5 | Ian's Ferrari | 79 | 63 | 73 | -10 | 2.0 | - | |
| 6 | Jacky Sparrow | 78 | 80 | 72 | +8 | 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