Official NHA Assessment
Race 4: BSA AUGUST TWO YEAR OLD SALE MERIT RATED 76 HANDICAP (Open)
Line Horse
Obscure
Reference for assessment
Exact Matches
0 / 5
Calculated = Official
Close Matches
0 / 5
Within 2 points
Significant Diffs
5 / 5
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 My Secret Place 5 52.0 1 0.00 0.0 62 64 62 +0 2 Obscure 4 60.0 2 3.00 3.5 76 76 76 +0 3 Tigers Eagle 3 59.0 3 8.00 7.0 74 64 64 -10 4 Coffeeberry 5 60.0 4 8.50 0.0 78 80 80 +2 5 Zazu 6 59.0 5 12.50 0.0 74 78 78 +4 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | My Secret Place | 62 | 71 | 62 | +9 | 0.0 | - | |
| 2 | Obscure Line | 76 | 87 | 76 | +11 | 3.5 | ||
| 3 | Tigers Eagle | 74 | 79 | 64 | +15 | 7.0 | - | |
| 4 | Coffeeberry | 78 | 72 | 80 | -8 | 0.0 | - | |
| 5 | Zazu | 74 | 71 | 78 | -7 | 0.0 | - |
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