Official NHA Assessment
Race 1: 4RACING WELCOMES YOU MAIDEN PLATE (For all Maidens)
Line Horse
Second To Nunn
Reference for assessment
Exact Matches
1 / 13
Calculated = Official
Close Matches
1 / 13
Within 2 points
Significant Diffs
5 / 13
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Sosoru 3 60.0 1 0.00 3.0 - 70 6 +6 2 Isaac Stephan 3 60.0 2 2.75 3.0 - 70 70 +70 3 Second To Nunn 2 57.5 3 4.45 2.0 67 67 67 +0 4 Stormact 2 57.0 4 4.50 2.0 - 66 66 +66 5 Life's Treasures 2 54.5 5 5.80 2.0 - 61 61 +61 6 Corsaro Super 2 57.0 6 7.00 2.0 - 66 66 +66 7 Scorpio 2 58.5 7 8.00 2.0 75 69 69 -6 8 Artifact 3 57.5 8 8.90 3.0 - 65 65 +65 9 Steel Spring 2 57.0 9 11.30 2.0 - 66 66 +66 10 Endearing Peace 2 57.0 10 13.30 2.0 - 66 66 +66 11 Velvet Valour 3 58.5 11 16.30 3.0 60 67 67 +7 99 Sheriff Bill Brown 2 57.0 99 0.00 2.0 - 66 66 +0 99 Gimme Some Luck 2 54.5 99 0.00 2.0 - 61 61 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Sosoru | - | - | 6 | -6 | 3.0 | - | |
| 2 | Isaac Stephan | - | - | 70 | -70 | 3.0 | - | |
| 3 | Second To Nunn Line | 67 | 67 | 67 | ✓ Match | 2.0 | ||
| 4 | Stormact | - | - | 66 | - | 2.0 | - | |
| 5 | Life's Treasures | - | - | 61 | - | 2.0 | - | |
| 6 | Corsaro Super | - | - | 66 | - | 2.0 | - | |
| 7 | Scorpio | 75 | 75 | 69 | +6 | 2.0 | - | |
| 8 | Artifact | - | - | 65 | -65 | 3.0 | - | |
| 9 | Steel Spring | - | - | 66 | - | 2.0 | - | |
| 10 | Endearing Peace | - | - | 66 | - | 2.0 | - | |
| 11 | Velvet Valour | 60 | 60 | 67 | -7 | 3.0 | - | |
| 99 | Sheriff Bill Brown | - | - | 66 | - | 2.0 | - | |
| 99 | Gimme Some Luck | - | - | 61 | - | 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