Official NHA Assessment

Race 6: BOOK FOR CHARITY MILE 28 OCTOBER GRADUATION HANDICAP (Maidens, 1 & 2 time winners)

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Line Horse
Captain Of Grit
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
2 / 7
Within 2 points
Significant Diffs
5 / 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    Archimides           3    52.0    1    0.00     8.5   72    70           72    +0
2    Now I Got You        5    61.5    2    0.30     0.0   91    111          111   +20
3    Captain Of Grit      3    58.0    3    3.50     8.5   83    83           83    +0
4    Houston              3    56.0    4    3.75     8.5   80    79           79    -1
5    French Impact        2    53.0    5    11.00    0.0   90    89           89    -1
99   High Roller          2    57.0    99   0.00     0.0   -     97           97    +0
99   Arividicio           5    57.5    99   0.00     0.0   -     98           98    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Archimides 72 70 72 -2 8.5 -
2 Now I Got You 91 67 111 -44 0.0 -
3 Captain Of Grit Line 83 84 83 +1 8.5
4 Houston 80 69 79 -10 8.5 -
5 French Impact 90 72 89 -17 0.0 -
99 High Roller - 86 97 -11 0.0 -
99 Arividicio - 50 98 -48 0.0 -
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