Official NHA Assessment

Race 6: UMZIMKHULU STAKES (Grade 3) (For 3 year-old Fillies)

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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
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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
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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
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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:
  1. Identify Line Horse - consistent performer used as reference
  2. Calculate WFA Allowance based on age, distance, and month
  3. Apply Drag Adjustment for beaten margin
  4. Calculate Actual Weight Performance:
    Weight - Drag - WFA
  5. Compare to Line Horse to determine race rating
  6. 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