Official NHA Assessment

Race 7: ANNE UPTON MEMORIAL MR 84 HANDICAP (Open)

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Line Horse
Duke Of Sussex
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
2 / 7
Within 2 points
Significant Diffs
4 / 7
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    Vanderbilt           3    58.0    1    0.00     9.0   81    75           81    +0
2    Mcebisi              4    54.5    2    3.00     7.0   73    74           74    +1
3    Duke Of Sussex       4    61.0    3    3.70     7.0   86    86           86    +0
4    Wolffs World         4    58.0    4    3.75     7.0   80    80           80    +0
5    Eskimo Pie           4    60.5    5    8.25     7.0   85    84           84    -1
6    Oyster King          5    57.5    6    9.00     0.0   79    92           92    +13
99   My Master            3    53.5    99   0.00     9.0   -     66           66    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Vanderbilt 81 103 81 +22 9.0 -
2 Mcebisi 73 70 74 -4 7.0 -
3 Duke Of Sussex Line 86 96 86 +10 7.0
4 Wolffs World 80 79 80 -1 7.0 -
5 Eskimo Pie 85 83 84 -1 7.0 -
6 Oyster King 79 50 92 -42 0.0 -
99 My Master - 57 66 -9 9.0 -
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