Official NHA Assessment
Race 1: QUICKWOOD MAIDEN PLATE (F & M) (For Maiden F&M. R15 000 Win bonus ROA Members)
Line Horse
Shikoku
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
7 / 8
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Arden Park 3 60.0 1 0.00 2.0 - -4 - +0 2 Shikoku 3 60.0 2 0.75 2.0 - - - +0 3 High Flyby 3 60.0 3 3.00 2.0 68 -2 58 -10 4 Oceans Pride 7 60.0 4 3.70 0.0 57 1 47 -10 5 National Star 2 56.0 5 3.75 0.0 - -7 - +0 6 Mayenne 3 60.0 6 10.00 2.0 67 -4 57 -10 7 Arizona Lady 4 60.0 7 10.50 1.0 55 -2 45 -10 8 Chasing Heart 3 60.0 8 99.99 2.0 - -4 - +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Arden Park | - | 53 | - | +53 | 2.0 | - | |
| 2 | Shikoku Line | - | 52 | - | +52 | 2.0 | ||
| 3 | High Flyby | 68 | 64 | 58 | +6 | 2.0 | - | |
| 4 | Oceans Pride | 57 | 57 | 47 | +10 | 0.0 | - | |
| 5 | National Star | - | 75 | - | +75 | 0.0 | - | |
| 6 | Mayenne | 67 | 61 | 57 | +4 | 2.0 | - | |
| 7 | Arizona Lady | 55 | 51 | 45 | +6 | 1.0 | - | |
| 8 | Chasing Heart | - | 44 | - | +44 | 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