Official NHA Assessment

Race 6: NIGHT RACE MEETING 17 NOVEMBER MR 96 HANDICAP (Open)

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Line Horse
Cliff Hanger
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 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    Rulership            2    60.5    1    0.00     5.0   97    107          97    +0
2    Tchaikovsky          6    55.5    2    1.00     0.0   87    107          107   +20
3    Cliff Hanger         2    59.5    3    2.25     5.0   105   105          105   +0
4    Ziyasha              2    58.0    4    3.50     5.0   102   102          102   +0
5    Ragnar Lothbrok      3    58.0    5    5.75     7.5   92    97           97    +5
6    Smith And Wesson     2    57.5    6    7.00     5.0   91    101          101   +10
7    The Mauritian        3    58.0    7    8.00     7.5   92    97           97    +5
8    Mythical Dream       5    56.0    8    13.00    0.0   88    108          108   +20
99   Covert Operator      6    53.5    99   0.00     0.0   -     103          103   +0
99   Samuel Salt          3    52.5    99   0.00     7.5   -     86           86    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Rulership 97 118 97 +21 5.0 -
2 Tchaikovsky 87 81 107 -26 0.0 -
3 Cliff Hanger Line 105 111 105 +6 5.0
4 Ziyasha 102 118 102 +16 5.0 -
5 Ragnar Lothbrok 92 81 97 -16 7.5 -
6 Smith And Wesson 91 73 101 -28 5.0 -
7 The Mauritian 92 100 97 +3 7.5 -
8 Mythical Dream 88 88 108 -20 0.0 -
99 Covert Operator - 77 103 -26 0.0 -
99 Samuel Salt - 82 86 -4 7.5 -
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