Official NHA Assessment
Race 7: INDEPENDENCE TROPHY (Open to 3yrs & older/ 4th Leg Open Series)
Line Horse
Brianna
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 Brianna 4 57.0 1 0.00 1.0 103 103 103 +0 2 Wantage 8 54.0 2 1.50 0.0 92 102 102 +10 3 Bugatti Blue 7 55.0 3 2.00 0.0 89 104 104 +15 4 Holy Land 6 56.5 4 2.25 0.0 101 107 107 +6 5 Jet Mirage 3 60.0 5 4.75 2.5 103 106 106 +3 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Brianna Line | 103 | 103 | 103 | ✓ Match | 1.0 | ||
| 2 | Wantage | 92 | 78 | 102 | -24 | 0.0 | - | |
| 3 | Bugatti Blue | 89 | 87 | 104 | -17 | 0.0 | - | |
| 4 | Holy Land | 101 | 97 | 107 | -10 | 0.0 | - | |
| 5 | Jet Mirage | 103 | 100 | 106 | -6 | 2.5 | - |
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