Official NHA Assessment

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

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Line Horse
Shipindani
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
9 / 11
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    Alltheboysiveloved   3    59.0    1    0.00     8.5   -     -            -     +0
2    Catch A Penny        3    59.0    2    1.50     8.5   -     -            -     +0
3    Heritage Ridge       3    59.0    3    1.90     8.5   67    -            66    -1
4    Shipindani           3    59.0    4    2.90     8.5   -     -            -     +0
5    Red State            3    59.0    5    3.40     8.5   -     -            -     +0
6    Casa Estiva          3    59.0    6    3.90     8.5   -     -            -     +0
7    Frida Kahlo          3    59.0    7    4.65     8.5   -     -            -     +0
8    Mrs Shackleton       2    60.0    8    5.65     5.5   61    8            51    -10
9    Fleur De Ville       3    59.0    9    5.70     8.5   78    -            70    -8
10   Rosa Osiria          3    59.0    10   7.70     8.5   75    -            66    -9
11   Oh Yoko              3    59.0    11   7.90     8.5   66    -            56    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Alltheboysiveloved - 83 - +83 8.5 -
2 Catch A Penny - 80 - +80 8.5 -
3 Heritage Ridge 67 59 66 -7 8.5 -
4 Shipindani Line - 69 - +69 8.5
5 Red State - 65 - +65 8.5 -
6 Casa Estiva - 79 - +79 8.5 -
7 Frida Kahlo - 81 - +81 8.5 -
8 Mrs Shackleton 61 50 51 -1 5.5 -
9 Fleur De Ville 78 60 70 -10 8.5 -
10 Rosa Osiria 75 57 66 -9 8.5 -
11 Oh Yoko 66 54 56 -2 8.5 -
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