Official NHA Assessment
Race 3: MERIT RATED 65 HANDICAP (Open)
Line Horse
Days Gone By
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
2 / 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 Sun Bird 3 60.0 1 0.00 3.5 65 60 65 +0 2 Prince Of Kimberly 3 57.0 2 1.00 3.5 66 60 60 -6 3 Days Gone By 3 54.0 3 2.00 3.5 53 53 53 +0 4 Chetan 3 52.0 4 2.75 3.5 44 47 47 +3 5 Admirals Chance 5 59.5 5 4.75 0.0 71 66 66 -5 99 Queen Of Dallas 3 52.0 99 0.00 3.5 - 44 44 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Sun Bird | 65 | 87 | 65 | +22 | 3.5 | - | |
| 2 | Prince Of Kimberly | 66 | 73 | 60 | +13 | 3.5 | - | |
| 3 | Days Gone By Line | 53 | 51 | 53 | -2 | 3.5 | ||
| 4 | Chetan | 44 | 45 | 47 | -2 | 3.5 | - | |
| 5 | Admirals Chance | 71 | 77 | 66 | +11 | 0.0 | - | |
| 99 | Queen Of Dallas | - | 40 | 44 | -4 | 3.5 | - |
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