Official NHA Assessment
Race 7: ZIMBABWE GUINEAS (Grade 3) (For all 3 year olds/ 1st leg Triple Crown)
Line Horse
Lady Sanza
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
1 / 6
Within 2 points
Significant Diffs
3 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Call The Wind 3 55.5 1 0.00 3.0 77 59 59 -18 2 Regulate 3 58.0 2 0.25 3.0 60 64 64 +4 3 Lady Sanza 3 55.5 3 4.25 3.0 60 60 60 +0 4 Cutback 6 56.0 4 10.25 0.0 67 66 66 -1 5 Keen Spirit 3 55.5 5 14.25 3.0 61 59 59 -2 6 Manvir 3 58.0 6 19.25 3.0 57 64 64 +7 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Call The Wind | 77 | 56 | 59 | -3 | 3.0 | - | |
| 2 | Regulate | 60 | 79 | 64 | +15 | 3.0 | - | |
| 3 | Lady Sanza Line | 60 | 58 | 60 | -2 | 3.0 | ||
| 4 | Cutback | 67 | 63 | 66 | -3 | 0.0 | - | |
| 5 | Keen Spirit | 61 | 71 | 59 | +12 | 3.0 | - | |
| 6 | Manvir | 57 | 52 | 64 | -12 | 3.0 | - |
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