Official NHA Assessment
Race 6: UMZIMKHULU STAKES (Grade 3) (For 3 year-old Fillies)
Line Horse
Canadian Summer
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
1 / 7
Within 2 points
Significant Diffs
5 / 7
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Shantastic 2 54.0 1 0.00 0.0 90 94 94 +4 2 Canadian Summer 2 60.0 2 2.70 0.0 108 108 108 +0 3 Let It Snow 2 54.0 3 3.50 0.0 85 95 95 +10 4 Ameena 2 57.0 4 4.80 0.0 106 100 100 -6 5 Acacia's Blossom 2 54.5 5 5.20 0.0 93 95 95 +2 6 Gimmealight 3 54.0 6 5.40 2.0 93 90 90 -3 7 Miss Cool 2 57.0 7 5.45 0.0 103 100 100 -3 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Shantastic | 90 | 109 | 94 | +15 | 0.0 | - | |
| 2 | Canadian Summer Line | 108 | 106 | 108 | -2 | 0.0 | ||
| 3 | Let It Snow | 85 | 61 | 95 | -34 | 0.0 | - | |
| 4 | Ameena | 106 | 103 | 100 | +3 | 0.0 | - | |
| 5 | Acacia's Blossom | 93 | 66 | 95 | -29 | 0.0 | - | |
| 6 | Gimmealight | 93 | 77 | 90 | -13 | 2.0 | - | |
| 7 | Miss Cool | 103 | 106 | 100 | +6 | 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