Official NHA Assessment
Race 4: RACEHORSE OWNERS ASSOCIATION MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)
Line Horse
Klaserie
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
5 / 8
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 My Ami Beach 6 60.0 1 0.00 0.0 - 63 6 +6 2 Back To Formentera 3 60.0 2 2.25 2.5 55 58 58 +3 3 For All We Know 3 60.0 3 2.30 2.5 70 58 60 -10 4 Klaserie 3 60.0 4 4.80 2.5 58 58 58 +0 5 Antonia Augusta 2 57.0 5 4.85 1.5 - 54 54 +54 6 St Kitts 2 57.0 6 11.60 1.5 - 54 54 +54 7 Hola Chiquita 5 58.5 7 13.10 0.0 40 60 60 +20 8 Captain's Flower 3 60.0 8 28.35 2.5 59 58 58 -1 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | My Ami Beach | - | 70 | 6 | +64 | 0.0 | - | |
| 2 | Back To Formentera | 55 | 60 | 58 | +2 | 2.5 | - | |
| 3 | For All We Know | 70 | 79 | 60 | +19 | 2.5 | - | |
| 4 | Klaserie Line | 58 | 57 | 58 | -1 | 2.5 | ||
| 5 | Antonia Augusta | - | 57 | 54 | +3 | 1.5 | - | |
| 6 | St Kitts | - | 63 | 54 | +9 | 1.5 | - | |
| 7 | Hola Chiquita | 40 | 38 | 60 | -22 | 0.0 | - | |
| 8 | Captain's Flower | 59 | 39 | 58 | -19 | 2.5 | - |
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