Official NHA Assessment
Race 2: MAIDEN PLATE (Maiden Plate Colts & Geldings to carry)
Line Horse
Star Aglow
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
0 / 6
Within 2 points
Significant Diffs
6 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Star Aglow 3 57.5 1 0.00 1.5 63 63 63 +0 2 Zavannahgold 2 54.5 2 0.75 0.5 - 59 59 +59 3 Zoe Alexandra (ZIM) 3 57.5 3 4.75 1.5 - 63 63 +63 4 Montanna Bay 2 54.5 4 6.25 0.5 - 59 59 +59 99 Lord Emmanuel (ZIM) 3 60.0 99 0.00 1.5 - 68 68 +0 99 Cario 4 60.0 99 0.00 2.0 - 67 67 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Star Aglow Line | 63 | 74 | 63 | +11 | 1.5 | ||
| 2 | Zavannahgold | - | 78 | 59 | +19 | 0.5 | - | |
| 3 | Zoe Alexandra (ZIM) | - | 50 | 63 | -13 | 1.5 | - | |
| 4 | Montanna Bay | - | 51 | 59 | -8 | 0.5 | - | |
| 99 | Lord Emmanuel (ZIM) | - | 20 | 68 | -48 | 1.5 | - | |
| 99 | Cario | - | 41 | 67 | -26 | 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