Official NHA Assessment

Race 8: GORDON STERLEY, HENNIE VAN WYK, HAROLD WHITEHEAD MR 106 HANDICAP (Open)

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Line Horse
Power Broker
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
3 / 8
Within 2 points
Significant Diffs
3 / 8
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    Cosmic Star          3    57.0    1    0.00     3.0   100   98           100   +0
2    Captain Hindsight    5    62.0    2    1.25     0.0   110   114          114   +4
3    Power Broker         2    59.0    3    2.00     2.0   104   104          104   +0
4    Aussenkehr           2    53.0    4    2.25     2.0   100   92           92    -8
5    Swing Upon A Star    2    59.5    5    3.25     2.0   105   105          105   +0
6    Danilo Danilovitch   3    58.5    6    3.40     3.0   103   101          101   -2
7    Cold Fact            3    57.5    7    16.00    3.0   109   99           99    -10
99   Bard Of Avon         3    59.5    99   0.00     3.0   -     103          103   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Cosmic Star 100 105 100 +5 3.0 -
2 Captain Hindsight 110 112 114 -2 0.0 -
3 Power Broker Line 104 102 104 -2 2.0
4 Aussenkehr 100 79 92 -13 2.0 -
5 Swing Upon A Star 105 102 105 -3 2.0 -
6 Danilo Danilovitch 103 89 101 -12 3.0 -
7 Cold Fact 109 109 99 +10 3.0 -
99 Bard Of Avon - 105 103 +2 3.0 -
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