Official NHA Assessment

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

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Line Horse
Vroom Vroom
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 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    Vroom Vroom          3    60.0    1    0.00     6.0   -     -            -     +0
2    Silver Salute        3    60.0    2    3.75     6.0   -     -            -     +0
3    Autumn Rush          3    56.0    3    4.50     6.0   58    -8           48    -10
4    Vivo Per Lei         3    60.0    4    6.75     6.0   62    -            59    -3
5    Lady Orbit           3    60.0    5    10.00    6.0   -     -            -     +0
6    Miss Attitude        3    60.0    6    11.00    6.0   -     -            -     +0
7    Catrien              3    60.0    7    13.75    6.0   68    -            62    -6
8    First Kiss           2    60.0    8    17.50    4.0   68    4            58    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Vroom Vroom Line - 79 - +79 6.0
2 Silver Salute - 82 - +82 6.0 -
3 Autumn Rush 58 68 48 +20 6.0 -
4 Vivo Per Lei 62 66 59 +7 6.0 -
5 Lady Orbit - 69 - +69 6.0 -
6 Miss Attitude - 69 - +69 6.0 -
7 Catrien 68 60 62 -2 6.0 -
8 First Kiss 68 55 58 -3 4.0 -
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