Official NHA Assessment

Race 7: CELEBRATING CENTURION MEMBER OWEN HEFFER'S BIRTHDAY D STAKES (For All Horses with a nett rating of 69 & below)

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Line Horse
Twice The Master
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
4 / 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    Baton Rouge          4    61.5    1    0.00     1.0   62    61           61    -1
2    Twice The Master     3    57.0    2    2.00     2.0   55    55           55    +0
3    Gold Index           3    57.0    3    2.75     2.0   55    53           53    -2
4    Beer With The Boys   3    61.5    4    4.50     2.0   64    60           60    -4
5    Summer Night City    5    53.5    5    4.60     0.0   59    48           49    -10
6    Fort Impreza         3    57.5    6    6.85     2.0   63    51           53    -10
7    Hiawatha Goldberg    2    61.5    7    10.10    0.0   62    63           63    +1
8    Sansa Stark          4    59.0    8    11.85    1.0   68    56           58    -10
99   Copper Plate         3    53.0    99   0.00     2.0   -     42           42    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Baton Rouge 62 69 61 +8 1.0 -
2 Twice The Master Line 55 58 55 +3 2.0
3 Gold Index 55 53 53 ✓ Match 2.0 -
4 Beer With The Boys 64 59 60 -1 2.0 -
5 Summer Night City 59 57 49 +8 0.0 -
6 Fort Impreza 63 56 53 +3 2.0 -
7 Hiawatha Goldberg 62 57 63 -6 0.0 -
8 Sansa Stark 68 63 58 +5 1.0 -
99 Copper Plate - 75 42 +33 2.0 -
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