Official NHA Assessment
Race 2: MERIT RATED 65 HANDICAP (Open)
Line Horse
Chetan
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
0 / 6
Within 2 points
Significant Diffs
6 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Why Madera 2 60.0 1 0.00 0.0 80 79 80 +0 2 Chetan 3 55.0 2 3.00 8.0 55 55 55 +0 3 Days Gone By 3 57.5 3 4.25 8.0 60 59 59 -1 4 Queen Of Dallas 3 54.0 4 5.50 8.0 53 51 51 -2 5 At The Office 6 57.5 5 6.75 0.0 59 74 74 +15 6 Deposition 6 58.5 6 13.75 0.0 61 76 76 +15 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Why Madera | 80 | 89 | 80 | +9 | 0.0 | - | |
| 2 | Chetan Line | 55 | 45 | 55 | -10 | 8.0 | ||
| 3 | Days Gone By | 60 | 51 | 59 | -8 | 8.0 | - | |
| 4 | Queen Of Dallas | 53 | 40 | 51 | -11 | 8.0 | - | |
| 5 | At The Office | 59 | 45 | 74 | -29 | 0.0 | - | |
| 6 | Deposition | 61 | 68 | 76 | -8 | 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