Official NHA Assessment

Race 1: 4RACING WELCOMES YOU WORK RIDERS MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
On The Guest List
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
8 / 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    Elembee              5    59.0    1    0.00     0.0   -     68           6     +6
2    On The Guest List    2    59.0    2    3.65     0.0   69    69           69    +0
3    Bushveld             3    59.0    3    3.75     6.0   -     57           57    +57
4    Double Joy           2    59.0    4    5.50     0.0   49    68           68    +19
5    Sassy                2    59.0    5    6.00     0.0   64    68           68    +4
6    Ballycotton          2    59.0    6    11.00    0.0   62    68           68    +6
7    Ultima Ictu          2    59.0    7    15.00    0.0   63    68           68    +5
8    London Paladium      3    59.0    8    18.00    6.0   -     56           56    +56
9    Alabama Storm        2    59.0    9    99.99    0.0   49    68           68    +19
10   Storm Jewel          3    60.0    10   99.99    6.0   52    58           58    +6
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Elembee - 77 6 +71 0.0 -
2 On The Guest List Line 69 57 69 -12 0.0
3 Bushveld - 56 57 -1 6.0 -
4 Double Joy 49 44 68 -24 0.0 -
5 Sassy 64 55 68 -13 0.0 -
6 Ballycotton 62 53 68 -15 0.0 -
7 Ultima Ictu 63 60 68 -8 0.0 -
8 London Paladium - 59 56 +3 6.0 -
9 Alabama Storm 49 47 68 -21 0.0 -
10 Storm Jewel 52 48 58 -10 6.0 -
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