Official NHA Assessment

Race 3: TABONLINE.CO.ZA MAIDEN PLATE (For all Maidens)

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Line Horse
Nevada King
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
4 / 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    Triple Time          5    57.0    1    0.00     0.0   -     79           6     +6
2    Sudden Song          3    60.0    2    4.25     8.5   68    69           69    +1
3    Nevada King          2    57.0    3    5.00     0.0   79    79           79    +0
4    Donder Storm         3    60.0    4    5.50     8.5   67    68           68    +1
5    Impetuous            2    57.0    5    5.55     0.0   -     79           79    +79
6    Red William          5    57.0    6    5.65     0.0   77    79           79    +2
7    Run For Me           2    57.0    7    6.40     0.0   -     79           79    +79
8    Mr Winter            2    57.0    8    6.90     0.0   -     79           79    +79
9    Ensuing              2    57.0    9    15.15    0.0   82    79           79    -3
10   Robert Burns         3    60.0    10   25.15    8.5   71    68           68    -3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Triple Time - 105 6 +99 0.0 -
2 Sudden Song 68 71 69 +2 8.5 -
3 Nevada King Line 79 80 79 +1 0.0
4 Donder Storm 67 63 68 -5 8.5 -
5 Impetuous - 74 79 -5 0.0 -
6 Red William 77 83 79 +4 0.0 -
7 Run For Me - 65 79 -14 0.0 -
8 Mr Winter - 58 79 -21 0.0 -
9 Ensuing 82 87 79 +8 0.0 -
10 Robert Burns 71 71 68 +3 8.5 -
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