Official NHA Assessment
Race 5: RACEHORSE OWNERS ASSOCIATION MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)
Line Horse
Desert Fox
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
3 / 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 Every Cloud 3 57.5 1 0.00 2.5 63 61 61 -2 2 Sword Of Mercy 3 60.0 2 5.25 2.5 75 66 66 -9 3 Desert Fox 3 60.0 3 6.00 2.5 66 66 66 +0 4 King's Express 3 60.0 4 9.50 2.5 - 66 66 +66 5 Williamson 2 60.0 5 10.00 0.0 68 71 71 +3 6 Atchison Topeka 3 56.5 6 10.10 2.5 55 59 59 +4 7 Volte Face 3 60.0 7 10.50 2.5 50 66 66 +16 8 I'm A Man 2 60.0 8 13.00 0.0 68 71 71 +3 9 Master Of Defense 3 60.0 9 17.00 2.5 63 66 66 +3 10 Raining Rubies 5 56.5 10 22.00 0.0 59 64 64 +5 11 Flight De Grace 5 56.5 11 33.00 0.0 45 64 64 +19 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Every Cloud | 63 | 72 | 61 | +11 | 2.5 | - | |
| 2 | Sword Of Mercy | 75 | 65 | 66 | -1 | 2.5 | - | |
| 3 | Desert Fox Line | 66 | 57 | 66 | -9 | 2.5 | ||
| 4 | King's Express | - | 102 | 66 | +36 | 2.5 | - | |
| 5 | Williamson | 68 | 62 | 71 | -9 | 0.0 | - | |
| 6 | Atchison Topeka | 55 | 51 | 59 | -8 | 2.5 | - | |
| 7 | Volte Face | 50 | 66 | 66 | ✓ Match | 2.5 | - | |
| 8 | I'm A Man | 68 | 69 | 71 | -2 | 0.0 | - | |
| 9 | Master Of Defense | 63 | 63 | 66 | -3 | 2.5 | - | |
| 10 | Raining Rubies | 59 | 75 | 64 | +11 | 0.0 | - | |
| 11 | Flight De Grace | 45 | 45 | 64 | -19 | 0.0 | - |
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