Official NHA Assessment

Race 1: www.tabgold.co.za MAIDEN PLATE (For all Maidens)

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Line Horse
King's Spear
Reference for assessment
Exact Matches
1 / 12
Calculated = Official
Close Matches
1 / 12
Within 2 points
Significant Diffs
10 / 12
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    Silver Ducat         2    53.0    1    0.00     2.0   -     49           6     +6
2    King's Spear         4    60.0    2    2.00     3.5   60    60           60    +0
3    Slurricane           3    60.0    3    2.05     3.0   -     61           61    +61
4    Ndaka                3    60.0    4    2.10     3.0   67    61           61    -6
5    Admiral Castile      3    60.0    5    3.00     3.0   58    61           61    +3
6    Ice Kingdom          2    57.0    6    3.30     2.0   -     57           57    +57
7    Granddaddy Purple    3    60.0    7    4.60     3.0   -     61           61    +61
8    Haal Uit En Wys      3    60.0    8    4.85     3.0   -     61           61    +61
9    Bim Bam Buddy        3    58.5    9    7.55     3.0   57    58           58    +1
10   Lockheed Electra     3    60.0    10   7.60     3.0   -     61           61    +61
11   Flying Wonder        3    60.0    11   10.20    3.0   -     61           61    +61
99   Wulfston             2    57.0    99   0.00     2.0   -     57           57    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Silver Ducat - 78 6 +72 2.0 -
2 King's Spear Line 60 54 60 -6 3.5
3 Slurricane - 76 61 +15 3.0 -
4 Ndaka 67 61 61 ✓ Match 3.0 -
5 Admiral Castile 58 58 61 -3 3.0 -
6 Ice Kingdom - 80 57 +23 2.0 -
7 Granddaddy Purple - 50 61 -11 3.0 -
8 Haal Uit En Wys - 52 61 -9 3.0 -
9 Bim Bam Buddy 57 52 58 -6 3.0 -
10 Lockheed Electra - 51 61 -10 3.0 -
11 Flying Wonder - 52 61 -9 3.0 -
99 Wulfston - 75 57 +18 2.0 -
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