Official NHA Assessment
Race 2: MERIT RATED 65 HANDICAP (Open)
Line Horse
Powder Puff
Reference for assessment
Exact Matches
2 / 6
Calculated = Official
Close Matches
3 / 6
Within 2 points
Significant Diffs
3 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Red Top 5 56.0 1 0.00 0.0 63 56 63 +0 2 Powder Puff 4 57.0 2 0.75 1.5 59 59 59 +0 3 Justadoreher 5 60.0 3 0.80 0.0 65 68 68 +3 4 Cool Solution 9 57.5 4 8.80 0.0 60 59 59 -1 5 Mill Creek 7 55.5 5 8.85 0.0 56 55 55 -1 99 Battle Of Seattle 2 62.0 99 0.00 0.0 - 68 68 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Red Top | 63 | 70 | 63 | +7 | 0.0 | - | |
| 2 | Powder Puff Line | 59 | 58 | 59 | -1 | 1.5 | ||
| 3 | Justadoreher | 65 | 68 | 68 | ✓ Match | 0.0 | - | |
| 4 | Cool Solution | 60 | 51 | 59 | -8 | 0.0 | - | |
| 5 | Mill Creek | 56 | 55 | 55 | ✓ Match | 0.0 | - | |
| 99 | Battle Of Seattle | - | 59 | 68 | -9 | 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