Official NHA Assessment

Race 1: Hollywoodbets DURBANVILLE WELCOMES YOU MAIDEN PLATE (For all Maidens)

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Line Horse
Objet D' Art
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
6 / 9
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    Demanding Dave       2    58.0    1    0.00     6.5   87    -            87    +0
2    Objet D' Art         2    58.0    2    2.75     6.5   -     -            -     +0
3    Whirlwind            3    55.5    3    3.25     9.5   -     -11          -     +0
4    Moody Blue           3    60.0    4    3.75     9.5   60    -2           50    -10
5    Trip To Camelot      3    58.0    5    7.25     9.5   -     -6           -     +0
6    Celestial Rocket     2    54.0    6    8.75     6.5   -     -8           -     +0
7    Mount Augustus       2    58.0    7    9.50     6.5   84    -            78    -6
8    Fleur De Ville       3    53.5    8    9.55     9.5   75    -15          65    -10
99   Summer In Ireland    2    58.0    99   0.00     6.5   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Demanding Dave 87 102 87 +15 6.5 -
2 Objet D' Art Line - 89 - +89 6.5
3 Whirlwind - 87 - +87 9.5 -
4 Moody Blue 60 75 50 +25 9.5 -
5 Trip To Camelot - 74 - +74 9.5 -
6 Celestial Rocket - 62 - +62 6.5 -
7 Mount Augustus 84 82 78 +4 6.5 -
8 Fleur De Ville 75 60 65 -5 9.5 -
99 Summer In Ireland - - - - 6.5 -
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