Official NHA Assessment
Race 4: MERIT RATED 80 HANDICAP (Open)
Line Horse
Forgotten Time
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 Admirals Chance 5 59.0 1 0.00 0.0 78 86 78 +0 2 Battle Of Seattle 2 60.0 2 1.75 0.0 80 91 91 +11 3 Forgotten Time 3 55.0 3 2.75 5.0 70 70 70 +0 4 Red Top 5 54.5 4 3.25 0.0 69 79 79 +10 5 Zavannahgold 2 59.0 5 4.25 0.0 78 87 87 +9 6 Obscure 4 60.0 6 11.25 3.0 80 82 82 +2 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Admirals Chance | 78 | 77 | 78 | -1 | 0.0 | - | |
| 2 | Battle Of Seattle | 80 | 59 | 91 | -32 | 0.0 | - | |
| 3 | Forgotten Time Line | 70 | 76 | 70 | +6 | 5.0 | ||
| 4 | Red Top | 69 | 70 | 79 | -9 | 0.0 | - | |
| 5 | Zavannahgold | 78 | 78 | 87 | -9 | 0.0 | - | |
| 6 | Obscure | 80 | 87 | 82 | +5 | 3.0 | - |
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