Official NHA Assessment

Race 7: WWW.TAB4RACING.COM MR 93 HANDICAP (Open)

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Line Horse
Clarkson
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
0 / 11
Within 2 points
Significant Diffs
10 / 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    I Am Giant           2    57.5    1    0.00     1.0   90    91           90    +0
2    Captain Dizzy        4    57.0    2    2.50     2.5   87    87           87    +0
3    Clarkson             4    57.0    3    3.50     2.5   87    87           87    +0
4    Aussenkehr           2    60.0    4    4.75     1.0   95    96           96    +1
5    Arividicio           5    57.5    5    6.25     0.0   90    93           93    +3
6    The Mauritian        3    58.5    6    7.00     2.0   92    91           91    -1
7    Barneys Pride        3    57.0    7    7.25     2.0   87    88           88    +1
8    Super Agra           4    55.0    8    7.75     2.5   83    83           83    +0
9    Thymetoshine         5    54.0    9    9.75     0.0   83    86           86    +3
10   Goliath Heron        6    57.5    10   12.25    0.0   88    93           93    +5
11   Rockets Red Glare    3    59.5    11   26.75    2.0   94    93           93    -1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 I Am Giant 90 124 90 +34 1.0 -
2 Captain Dizzy 87 96 87 +9 2.5 -
3 Clarkson Line 87 75 87 -12 2.5
4 Aussenkehr 95 79 96 -17 1.0 -
5 Arividicio 90 50 93 -43 0.0 -
6 The Mauritian 92 100 91 +9 2.0 -
7 Barneys Pride 87 76 88 -12 2.0 -
8 Super Agra 83 60 83 -23 2.5 -
9 Thymetoshine 83 51 86 -35 0.0 -
10 Goliath Heron 88 86 93 -7 0.0 -
11 Rockets Red Glare 94 88 93 -5 2.0 -
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