Official NHA Assessment
Race 2: CHAMPIONS DAY 4 APRIL MAIDEN PLATE (For all Maidens)
Line Horse
Arizona Magic
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
7 / 11
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Dante's Bond 2 56.0 1 0.00 2.5 - 64 6 +6 2 Arizona Magic 4 58.5 2 4.40 4.0 66 66 66 +0 3 Highwayman Harry 3 60.0 3 4.65 3.5 79 70 70 -9 4 Greenandgold 3 57.5 4 7.95 3.5 - 65 65 +65 5 Cool Gambler 3 60.0 5 8.35 3.5 - 70 70 +70 6 Rip Wheeler 3 60.0 6 9.45 3.5 - 70 70 +70 7 Green Machine 3 60.0 7 13.65 3.5 - 70 70 +70 8 Fred Frizzle 3 58.5 8 15.15 3.5 - 67 67 +67 9 World Wonderer 3 60.0 9 18.65 3.5 - 70 70 +70 10 Jawbreaker 3 57.5 10 20.95 3.5 66 65 65 -1 99 Tiger's Captain 2 60.0 99 0.00 2.5 - 72 72 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Dante's Bond | - | 83 | 6 | +77 | 2.5 | - | |
| 2 | Arizona Magic Line | 66 | 66 | 66 | ✓ Match | 4.0 | ||
| 3 | Highwayman Harry | 79 | 78 | 70 | +8 | 3.5 | - | |
| 4 | Greenandgold | - | - | 65 | -65 | 3.5 | - | |
| 5 | Cool Gambler | - | - | 70 | -70 | 3.5 | - | |
| 6 | Rip Wheeler | - | - | 70 | -70 | 3.5 | - | |
| 7 | Green Machine | - | 75 | 70 | +5 | 3.5 | - | |
| 8 | Fred Frizzle | - | 45 | 67 | -22 | 3.5 | - | |
| 9 | World Wonderer | - | 64 | 70 | -6 | 3.5 | - | |
| 10 | Jawbreaker | 66 | 62 | 65 | -3 | 3.5 | - | |
| 99 | Tiger's Captain | - | 70 | 72 | -2 | 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