Official NHA Assessment

Race 1: Hollywoodbets KENILWORTH WELCOMES YOU WORK RIDERS' MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Mrs Shackleton
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
7 / 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    Morfeliha            2    61.5    1    0.00     5.0   70    49           49    -21
2    Playing Trix         3    61.0    2    1.75     7.5   -     43           43    +43
3    Whatastar            2    61.0    3    5.00     5.0   76    48           66    -10
4    Lovely Dancer        3    61.0    4    5.40     7.5   -     43           43    +43
5    Mrs Shackleton       2    62.0    5    8.90     5.0   50    50           50    +0
6    Laydelay             2    61.0    6    9.00     5.0   84    48           74    -10
7    Crazy Little Thing   2    61.0    7    12.50    5.0   73    48           63    -10
8    Lifelong Dance       3    62.0    8    14.50    7.5   54    45           45    -9
9    Potenza              3    61.0    9    23.00    7.5   -     43           43    +43
10   Fleur De Ville       3    62.0    10   28.00    7.5   62    45           52    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Morfeliha 70 74 49 +25 5.0 -
2 Playing Trix - 80 43 +37 7.5 -
3 Whatastar 76 75 66 +9 5.0 -
4 Lovely Dancer - 59 43 +16 7.5 -
5 Mrs Shackleton Line 50 50 50 ✓ Match 5.0
6 Laydelay 84 76 74 +2 5.0 -
7 Crazy Little Thing 73 66 63 +3 5.0 -
8 Lifelong Dance 54 53 45 +8 7.5 -
9 Potenza - 76 43 +33 7.5 -
10 Fleur De Ville 62 60 52 +8 7.5 -
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