Official NHA Assessment

Race 2: www.tabgold.co.za MAIDEN PLATE (For all Maidens)

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Line Horse
River Dance
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
1 / 11
Within 2 points
Significant Diffs
9 / 11
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    Magma Magic          4    60.0    1    0.00     3.0   73    79           70    -3
2    El Capitan           2    59.0    2    4.60     0.0   82    83           83    +1
3    River Dance          3    59.0    3    4.90     5.0   73    73           73    +0
4    Lingotto             2    59.0    4    11.00    0.0   73    83           83    +10
5    Doin' Time           5    60.0    5    12.00    0.0   56    85           85    +29
6    Tee Dog              3    59.0    6    13.30    5.0   -     73           73    +73
7    Samuel Longsword     3    57.5    7    13.35    5.0   71    70           70    -1
8    The Iron Duke        3    59.0    8    13.85    5.0   -     73           73    +73
9    Gustav Klimt         3    59.0    9    17.65    5.0   -     73           73    +73
99   Tre Uno              3    59.0    99   0.00     5.0   -     73           73    +0
99   Captainship          3    59.0    99   0.00     5.0   -     73           73    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Magma Magic 73 81 70 +11 3.0 -
2 El Capitan 82 70 83 -13 0.0 -
3 River Dance Line 73 68 73 -5 5.0
4 Lingotto 73 75 83 -8 0.0 -
5 Doin' Time 56 54 85 -31 0.0 -
6 Tee Dog - 74 73 +1 5.0 -
7 Samuel Longsword 71 56 70 -14 5.0 -
8 The Iron Duke - 64 73 -9 5.0 -
9 Gustav Klimt - 50 73 -23 5.0 -
99 Tre Uno - - 73 -73 5.0 -
99 Captainship - 67 73 -6 5.0 -
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