Official NHA Assessment

Race 2: www.tabgold.co.za MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Sea Of Tears
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
8 / 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    Isn't She Bonny      2    58.5    1    0.00     2.5   75    65           65    -10
2    Sea Of Tears         2    60.0    2    5.20     2.5   68    68           68    +0
3    Kyniska              3    60.0    3    5.45     3.5   56    66           66    +10
4    Law Of Success       3    60.0    4    7.05     3.5   -     66           66    +66
5    Ladies Day           3    60.0    5    9.05     3.5   55    66           66    +11
6    La Prestissimo       3    58.5    6    10.15    3.5   -     63           63    +63
7    Classical Chord      2    60.0    7    12.85    2.5   -     68           68    +68
8    Fiery Filly          3    60.0    8    13.10    3.5   -     66           66    +66
9    Lady Tenacity        3    60.0    9    15.00    3.5   -     66           66    +66
10   Madam Senator        3    60.0    10   19.00    3.5   -     66           66    +66
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Isn't She Bonny 75 71 65 +6 2.5 -
2 Sea Of Tears Line 68 60 68 -8 2.5
3 Kyniska 56 61 66 -5 3.5 -
4 Law Of Success - 81 66 +15 3.5 -
5 Ladies Day 55 56 66 -10 3.5 -
6 La Prestissimo - 62 63 -1 3.5 -
7 Classical Chord - 58 68 -10 2.5 -
8 Fiery Filly - 60 66 -6 3.5 -
9 Lady Tenacity - - 66 -66 3.5 -
10 Madam Senator - 47 66 -19 3.5 -
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