Official NHA Assessment

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

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Line Horse
None identified
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
9 / 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    Vivacious Spirit     2    57.0    1    0.00     0.5   -     -            -     +0
2    Gregarious Gal       2    57.0    2    1.00     0.5   -     -            -     +0
3    Miss Soho            2    57.0    3    5.00     0.5   -     -            -     +0
4    Ponderosa Pine       2    57.0    4    7.25     0.5   -     -            -     +0
5    Scabiosa             2    57.0    5    10.50    0.5   -     -            -     +0
6    La Banquiere         4    60.0    6    11.00    2.0   51    -            46    -5
7    Montana Nymph        2    57.0    7    11.75    0.5   -     -            -     +0
8    Idabelle             2    57.0    8    13.00    0.5   -     -            -     +0
9    Che Ballerina        2    57.0    9    14.25    0.5   -     -            -     +0
10   Three Bells          3    56.0    10   15.50    1.5   20    -            11    -9
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Vivacious Spirit - 78 - +78 0.5 -
2 Gregarious Gal - 78 - +78 0.5 -
3 Miss Soho - 73 - +73 0.5 -
4 Ponderosa Pine - 63 - +63 0.5 -
5 Scabiosa - 59 - +59 0.5 -
6 La Banquiere 51 51 46 +5 2.0 -
7 Montana Nymph - 57 - +57 0.5 -
8 Idabelle - 70 - +70 0.5 -
9 Che Ballerina - 32 - +32 0.5 -
10 Three Bells 20 43 11 +32 1.5 -
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