Official NHA Assessment

Race 5: 4RACING.TV MR 90 HANDICAP (Open)

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Line Horse
Sir Michael
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
6 / 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    Vanderbilt           3    57.5    1    0.00     9.0   89    66           89    +0
2    Sir Michael          5    61.5    2    4.25     0.0   93    93           93    +0
3    Barneys Pride        3    60.5    3    4.65     9.0   92    72           82    -10
4    Leopold              5    60.0    4    5.25     0.0   90    89           89    -1
5    Bloomington          3    49.0    5    6.05     9.0   77    49           67    -10
6    Diesel And Dust      4    59.0    6    6.10     7.0   88    73           78    -10
7    Kaptein              4    57.0    7    7.70     7.0   84    69           74    -10
8    Duke Of Rain         3    53.0    8    10.30    9.0   77    57           67    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Vanderbilt 89 103 89 +14 9.0 -
2 Sir Michael Line 93 81 93 -12 0.0
3 Barneys Pride 92 76 82 -6 9.0 -
4 Leopold 90 79 89 -10 0.0 -
5 Bloomington 77 69 67 +2 9.0 -
6 Diesel And Dust 88 95 78 +17 7.0 -
7 Kaptein 84 80 74 +6 7.0 -
8 Duke Of Rain 77 70 67 +3 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