Official NHA Assessment
Race 3: RACING TODAY MAIDEN PLATE (F & M) (For Maiden F&M)
Line Horse
Preserve Forever
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
3 / 8
Within 2 points
Significant Diffs
2 / 8
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Hat Montera 3 57.5 1 0.00 2.0 60 53 53 -7 2 Preserve Forever 3 60.0 2 5.50 2.0 58 58 58 +0 3 Global Scene 2 60.0 3 6.75 0.0 66 62 62 -4 4 Cheap Thrills 4 60.0 4 7.25 1.0 51 60 60 +9 5 Fantasy Girl 2 60.0 5 7.30 0.0 62 62 62 +0 6 Celtique 3 60.0 6 8.80 2.0 50 58 58 +8 7 Oh Mandy 3 60.0 7 10.80 2.0 65 58 58 -7 99 Battle Of Britain 3 60.0 99 0.00 2.0 - 58 58 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Hat Montera | 60 | 81 | 53 | +28 | 2.0 | - | |
| 2 | Preserve Forever Line | 58 | 53 | 58 | -5 | 2.0 | ||
| 3 | Global Scene | 66 | 61 | 62 | -1 | 0.0 | - | |
| 4 | Cheap Thrills | 51 | 56 | 60 | -4 | 1.0 | - | |
| 5 | Fantasy Girl | 62 | 58 | 62 | -4 | 0.0 | - | |
| 6 | Celtique | 50 | 58 | 58 | ✓ Match | 2.0 | - | |
| 7 | Oh Mandy | 65 | 64 | 58 | +6 | 2.0 | - | |
| 99 | Battle Of Britain | - | 59 | 58 | +1 | 2.0 | - |
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