Official NHA Assessment
Race 3: ROOIES FOURIE, GREG HOLME, DANNY LOMBARD MAIDEN PLATE (For all Maidens)
Line Horse
Arizona Magic
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
3 / 8
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Arizona Magic 4 60.0 1 0.00 3.5 66 66 66 +0 2 Periodic Table 3 60.0 2 2.75 3.0 - 67 67 +67 3 Sabalenka 2 54.5 3 6.75 2.0 - 58 58 +58 4 Sky Pilot 3 60.0 4 6.95 3.0 76 67 67 -9 5 Captain's Express 3 57.5 5 10.95 3.0 - 62 62 +62 6 Willow Charm 2 60.0 6 14.45 2.0 70 69 69 -1 7 Flotilla 2 57.0 7 17.35 2.0 - 63 63 +63 8 Stage One 2 57.0 8 21.75 2.0 - 63 63 +63 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Arizona Magic Line | 66 | 66 | 66 | ✓ Match | 3.5 | ||
| 2 | Periodic Table | - | - | 67 | -67 | 3.0 | - | |
| 3 | Sabalenka | - | - | 58 | - | 2.0 | - | |
| 4 | Sky Pilot | 76 | 76 | 67 | +9 | 3.0 | - | |
| 5 | Captain's Express | - | - | 62 | -62 | 3.0 | - | |
| 6 | Willow Charm | 70 | 70 | 69 | +1 | 2.0 | - | |
| 7 | Flotilla | - | - | 63 | - | 2.0 | - | |
| 8 | Stage One | - | - | 63 | - | 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