Official NHA Assessment

Race 8: KLAWERVLEI STUD CLASS 4 (F & M) (For Fillies & Mares. Benchmark at 60.0kg = 80)

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Line Horse
Swiatek
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
7 / 9
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    La Divina            4    56.0    1    0.00     3.0   72    82           78    +6
2    Swiatek              3    59.0    2    0.75     5.0   88    88           88    +0
3    Miraculous           3    56.5    3    1.05     5.0   83    83           83    +0
4    Senhora Victoria     3    53.5    4    1.80     5.0   70    76           76    +6
5    Figure Eight         3    55.0    5    4.30     5.0   70    76           76    +6
6    All Is Green         3    59.0    6    4.50     5.0   88    84           84    -4
7    Maritzburg Memory    2    54.0    7    6.00     0.0   78    84           84    +6
8    Philosophise         5    62.0    8    6.75     0.0   84    100          100   +16
9    Sweetie Darling      2    59.0    9    15.50    0.0   88    94           94    +6
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 La Divina 72 77 78 -1 3.0 -
2 Swiatek Line 88 104 88 +16 5.0
3 Miraculous 83 79 83 -4 5.0 -
4 Senhora Victoria 70 66 76 -10 5.0 -
5 Figure Eight 70 67 76 -9 5.0 -
6 All Is Green 88 74 84 -10 5.0 -
7 Maritzburg Memory 78 74 84 -10 0.0 -
8 Philosophise 84 80 100 -20 0.0 -
9 Sweetie Darling 88 100 94 +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