Official NHA Assessment

Race 6: BET WITH COLOSSUS EXCLUSIVE ON www.tote.co.za CLASS 4 (F & M) (For Fillies & Mares. Benchmark at 60.0kg = 82)

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Line Horse
Siberian Winter
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
4 / 10
Within 2 points
Significant Diffs
2 / 10
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    De Vlugge            2    59.0    1    0.00     0.0   80    87           86    +6
2    Winter Rainfall      4    61.5    2    0.60     2.0   85    93           93    +8
3    Siberian Winter      3    57.0    3    2.80     3.0   79    79           79    +0
4    Mrsglittersparkles   2    57.5    4    3.40     0.0   84    85           85    +1
5    Qhawekazi            3    58.5    5    4.20     3.0   79    81           81    +2
6    Spinmyangelsspin     3    58.5    6    4.35     3.0   79    80           80    +1
7    Golden Angel         3    54.0    7    8.45     3.0   73    71           71    -2
8    Perilla              5    63.0    8    12.35    0.0   88    95           95    +7
9    Princess Goldie      3    55.5    9    14.85    3.0   73    74           74    +1
99   Thread Of Life       3    52.0    99   0.00     3.0   -     67           67    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 De Vlugge 80 85 86 -1 0.0 -
2 Winter Rainfall 85 87 93 -6 2.0 -
3 Siberian Winter Line 79 79 79 ✓ Match 3.0
4 Mrsglittersparkles 84 82 85 -3 0.0 -
5 Qhawekazi 79 78 81 -3 3.0 -
6 Spinmyangelsspin 79 77 80 -3 3.0 -
7 Golden Angel 73 72 71 +1 3.0 -
8 Perilla 88 89 95 -6 0.0 -
9 Princess Goldie 73 73 74 -1 3.0 -
99 Thread Of Life - 62 67 -5 3.0 -
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