Official NHA Assessment

Race 5: PMB & MIDLANDS CHAMBER OF BUSINESS PRESIDENT'S CUP FM 82 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Lady Serena
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
3 / 10
Within 2 points
Significant Diffs
5 / 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    Kailene              3    60.0    1    0.00     1.0   85    79           85    +0
2    Lady Serena          3    59.0    2    2.00     1.0   80    80           80    +0
3    Valerias Dream       3    59.5    3    2.10     1.0   87    81           81    -6
4    Maria Corolina       4    59.5    4    2.15     0.5   81    82           82    +1
5    Alittlebitnaughty    4    52.0    5    2.20     0.5   66    67           67    +1
6    Family Favourite     3    59.5    6    2.50     1.0   81    80           80    -1
7    Devils And Dust      2    55.0    7    4.40     0.0   75    71           71    -4
8    Perfect Trust        7    54.5    8    4.60     0.0   71    70           70    -1
9    Mvulazana            3    60.5    9    5.70     1.0   83    80           80    -3
99   Morgan La Fay        2    57.0    99   0.00     0.0   -     75           75    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Kailene 85 79 85 -6 1.0 -
2 Lady Serena Line 80 80 80 ✓ Match 1.0
3 Valerias Dream 87 77 81 -4 1.0 -
4 Maria Corolina 81 81 82 -1 0.5 -
5 Alittlebitnaughty 66 62 67 -5 0.5 -
6 Family Favourite 81 69 80 -11 1.0 -
7 Devils And Dust 75 52 71 -19 0.0 -
8 Perfect Trust 71 50 70 -20 0.0 -
9 Mvulazana 83 82 80 +2 1.0 -
99 Morgan La Fay - 98 75 +23 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