Official NHA Assessment

Race 4: JOHN MCMURTRY, MARK NEL, SIMON RAHILLY MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Ruby Whisper
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
5 / 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    Drachenfutter        2    57.0    1    0.00     2.0   -     -            -     +0
2    Destiny's Dream      2    60.0    2    0.20     2.0   77    6            67    -10
3    Secret Life          2    57.0    3    3.45     2.0   -     -            -     +0
4    Ruby Whisper         2    57.0    4    3.75     2.0   -     -            -     +0
5    Global Royalty       2    60.0    5    4.35     2.0   48    6            38    -10
6    Spring Tide          2    57.0    6    4.60     2.0   -     -            -     +0
7    Erik's Girl          2    57.5    7    4.85     2.0   67    1            57    -10
8    Hawker Tempest       2    57.0    8    99.99    2.0   -     -            -     +0
99   Gathering Winter     2    60.0    99   0.00     2.0   -     6            6     +0
99   Lady William         3    57.5    99   0.00     3.0   -     -1           -1    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Drachenfutter - - - - 2.0 -
2 Destiny's Dream 77 77 67 +10 2.0 -
3 Secret Life - - - - 2.0 -
4 Ruby Whisper Line - - - - 2.0
5 Global Royalty 48 64 38 +26 2.0 -
6 Spring Tide - - - - 2.0 -
7 Erik's Girl 67 67 57 +10 2.0 -
8 Hawker Tempest - - - - 2.0 -
99 Gathering Winter - 68 6 +62 2.0 -
99 Lady William - 59 -1 +60 3.0 -
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