Official NHA Assessment

Race 2: TAB MAIDEN JUVENILE PLATE (Fillies) (For 2 year olds fillies)

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Line Horse
None identified
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
0 / 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    Queen Of Sparta      2    60.0    1    0.00     0.0   -     -            -     +0
2    Inara's Dynasty      2    60.0    2    1.50     0.0   -     -            -     +0
3    Gypsy Express        5    60.0    3    3.25     0.0   -     -            -     +0
4    Happy Chance         2    60.0    4    5.50     0.0   -     -            -     +0
5    Trip To Barberton    2    60.0    5    8.75     0.0   -     -            -     +0
6    The Agents Muse      2    60.0    6    10.25    0.0   -     -            -     +0
7    Hazy Crazy Night     2    60.0    7    12.50    0.0   -     -            -     +0
8    Gold Beach           2    60.0    8    15.00    0.0   -     -            -     +0
9    Amanda Dunes         2    60.0    9    17.25    0.0   -     -            -     +0
99   Maiguru              2    60.0    99   0.00     0.0   -     -            -     +0
99   Dream Spinner        2    60.0    99   0.00     0.0   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Queen Of Sparta - 87 - +87 0.0 -
2 Inara's Dynasty - 89 - +89 0.0 -
3 Gypsy Express - 58 - +58 0.0 -
4 Happy Chance - 118 - +118 0.0 -
5 Trip To Barberton - 64 - +64 0.0 -
6 The Agents Muse - 64 - +64 0.0 -
7 Hazy Crazy Night - 79 - +79 0.0 -
8 Gold Beach - 54 - +54 0.0 -
9 Amanda Dunes - 50 - +50 0.0 -
99 Maiguru - 66 - - 0.0 -
99 Dream Spinner - 49 - - 0.0 -
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