Official NHA Assessment

Race 7: CHRISTMAS HANDICAP (Listed) (Open)

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Line Horse
Diani
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
4 / 11
Within 2 points
Significant Diffs
5 / 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    Imilenzeyokududuma   6    58.0    1    0.00     0.0   104   102          104   +0
2    Selukwe              3    54.0    2    2.20     6.0   89    85           85    -4
3    Diani                5    56.5    3    2.40     0.0   101   101          101   +0
4    Navajo Nation        4    58.0    4    3.40     3.0   104   97           97    -7
5    Mexican Pete         3    54.0    5    3.90     6.0   96    83           86    -10
6    Sundance Kid         5    54.0    6    4.30     0.0   96    94           94    -2
7    Kitchakal            5    54.0    7    5.60     0.0   89    94           94    +5
8    Natyam               5    57.5    8    6.50     0.0   103   101          101   -2
9    Formagear            5    60.0    9    10.00    0.0   108   106          106   -2
10   Strathclyde          3    54.5    10   11.40    6.0   97    83           87    -10
99   Palermo              4    54.0    99   0.00     3.0   -     88           88    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Imilenzeyokududuma 104 109 104 +5 0.0 -
2 Selukwe 89 115 85 +30 6.0 -
3 Diani Line 101 96 101 -5 0.0
4 Navajo Nation 104 104 97 +7 3.0 -
5 Mexican Pete 96 84 86 -2 6.0 -
6 Sundance Kid 96 96 94 +2 0.0 -
7 Kitchakal 89 86 94 -8 0.0 -
8 Natyam 103 102 101 +1 0.0 -
9 Formagear 108 108 106 +2 0.0 -
10 Strathclyde 97 97 87 +10 6.0 -
99 Palermo - 76 88 -12 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