Official NHA Assessment

Race 7: OPEN A TABGOLD ACCOUNT - 031 314 1874 FM 90 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Kailene
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
2 / 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    Lucky Miss           3    56.5    1    0.00     8.5   83    82           83    +0
2    Kailene              3    58.0    2    0.90     8.5   89    89           89    +0
3    Acacia's Blossom     2    59.0    3    1.20     0.0   89    108          108   +19
4    National Star        2    56.0    4    1.30     0.0   83    101          101   +18
5    Mvulazana            3    56.5    5    2.60     8.5   83    84           84    +1
6    Let It Snow          2    55.5    6    8.20     0.0   82    97           97    +15
99   Only Hearts          2    56.0    99   0.00     0.0   -     98           98    +0
99   Woodland Retreat     2    60.0    99   0.00     0.0   -     106          106   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Lucky Miss 83 82 83 -1 8.5 -
2 Kailene Line 89 79 89 -10 8.5
3 Acacia's Blossom 89 66 108 -42 0.0 -
4 National Star 83 75 101 -26 0.0 -
5 Mvulazana 83 82 84 -2 8.5 -
6 Let It Snow 82 61 97 -36 0.0 -
99 Only Hearts - 81 98 -17 0.0 -
99 Woodland Retreat - 75 106 -31 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