Official NHA Assessment
Race 3: CHILD WELFARE CHATSWORTH MAIDEN PLATE (For all Maidens)
Line Horse
Fire Force
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
1 / 11
Within 2 points
Significant Diffs
6 / 11
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Bad Medicine 3 60.0 1 0.00 4.5 76 57 57 -19 2 Silver Platter 4 60.0 2 3.60 2.0 66 65 65 -1 3 Fire Force 4 60.0 3 4.50 2.0 63 63 63 +0 4 I Am Classy 3 58.5 4 6.10 4.5 69 54 59 -10 5 Augrabies 3 60.0 5 6.70 4.5 - 57 57 +57 6 Mind How You Go 3 56.0 6 8.10 4.5 61 49 51 -10 7 The Green Gallant 6 60.0 7 10.90 0.0 56 66 66 +10 8 Cuzzie 3 60.0 8 12.40 4.5 78 57 68 -10 9 Seattle Rain 3 56.5 9 13.50 4.5 49 50 50 +1 10 Mont Tremblant 3 56.0 10 14.20 4.5 69 49 59 -10 11 Mumsy's Glory 3 60.0 11 99.99 4.5 33 57 57 +24 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Bad Medicine | 76 | 100 | 57 | +43 | 4.5 | - | |
| 2 | Silver Platter | 66 | 69 | 65 | +4 | 2.0 | - | |
| 3 | Fire Force Line | 63 | 60 | 63 | -3 | 2.0 | ||
| 4 | I Am Classy | 69 | 67 | 59 | +8 | 4.5 | - | |
| 5 | Augrabies | - | 56 | 57 | -1 | 4.5 | - | |
| 6 | Mind How You Go | 61 | 59 | 51 | +8 | 4.5 | - | |
| 7 | The Green Gallant | 56 | 55 | 66 | -11 | 0.0 | - | |
| 8 | Cuzzie | 78 | 54 | 68 | -14 | 4.5 | - | |
| 9 | Seattle Rain | 49 | 55 | 50 | +5 | 4.5 | - | |
| 10 | Mont Tremblant | 69 | 56 | 59 | -3 | 4.5 | - | |
| 11 | Mumsy's Glory | 33 | 33 | 57 | -24 | 4.5 | - |
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