Official NHA Assessment

Race 6: REMEMBERING DAVID ABERY CAPE B STAKES (F & M) (For Fillies & Mares with a nett rating of 96 & below)

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Line Horse
Callmegetrix
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
3 / 10
Within 2 points
Significant Diffs
6 / 10
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    Fatal Gem            4    57.5    1    0.00     5.0   87    83           83    -4
2    Callmegetrix         4    58.5    2    1.00     5.0   89    89           89    +0
3    Enchanting Choice    4    54.0    3    1.75     5.0   82    79           79    -3
4    Philosophise         5    55.5    4    2.25     0.0   84    92           92    +8
5    Fun Zone             5    58.5    5    2.30     0.0   89    97           97    +8
6    Knockout             2    60.0    6    2.40     0.0   94    100          100   +6
7    School Policy        2    58.5    7    2.70     0.0   90    97           97    +7
8    Wugug                2    55.5    8    2.90     0.0   84    91           91    +7
9    Lucky Miss           3    57.0    9    7.90     8.0   88    76           78    -10
10   Hampstead Heath      4    54.0    10   10.40    5.0   82    76           76    -6
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Fatal Gem 87 91 83 +8 5.0 -
2 Callmegetrix Line 89 113 89 +24 5.0
3 Enchanting Choice 82 99 79 +20 5.0 -
4 Philosophise 84 80 92 -12 0.0 -
5 Fun Zone 89 96 97 -1 0.0 -
6 Knockout 94 101 100 +1 0.0 -
7 School Policy 90 79 97 -18 0.0 -
8 Wugug 84 76 91 -15 0.0 -
9 Lucky Miss 88 82 78 +4 8.0 -
10 Hampstead Heath 82 75 76 -1 5.0 -
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