Official NHA Assessment

Race 8: PERFECTLY PLACED MIDDLE STAKES (F & M) (For Fillies and Mares with a nett rating of 102 & below)

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Line Horse
Back At The George
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
3 / 9
Within 2 points
Significant Diffs
4 / 9
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    Trip To Maputo       2    57.0    1    0.00     2.0   89    91           91    +2
2    Miss World           3    58.5    2    0.75     3.0   98    92           92    -6
3    Babelicious          3    58.5    3    1.05     3.0   95    92           92    -3
4    Back At The George   2    55.5    4    2.30     2.0   88    88           88    +0
5    Winter Rainfall      4    58.5    5    3.30     3.5   92    91           91    -1
6    Worldcraft           2    57.0    6    3.70     2.0   93    91           91    -2
7    Miss Marguerite      5    58.5    7    4.00     0.0   94    98           98    +4
8    Dark Winter          2    53.0    8    5.75     2.0   87    83           83    -4
9    Royals               2    61.5    9    6.05     2.0   100   100          100   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Trip To Maputo 89 96 91 +5 2.0 -
2 Miss World 98 91 92 -1 3.0 -
3 Babelicious 95 106 92 +14 3.0 -
4 Back At The George Line 88 90 88 +2 2.0
5 Winter Rainfall 92 87 91 -4 3.5 -
6 Worldcraft 93 83 91 -8 2.0 -
7 Miss Marguerite 94 91 98 -7 0.0 -
8 Dark Winter 87 82 83 -1 2.0 -
9 Royals 100 94 100 -6 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