Official NHA Assessment

Race 4: KEITH BASEL, DANNY LOMBARD, JOHN MCMURTRY, MARK NEL MR 96 HANDICAP (Open)

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Line Horse
Spanish Boy
Reference for assessment
Exact Matches
2 / 9
Calculated = Official
Close Matches
5 / 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    Goliath Heron        6    55.0    1    0.00     0.0   86    86           86    +0
2    It's About Time      3    55.0    2    0.05     3.0   90    80           80    -10
3    Spanish Boy          5    54.5    3    2.35     0.0   85    85           85    +0
4    Kwite A Trip         4    62.0    4    2.55     3.5   100   93           93    -7
5    Visiway              4    57.5    5    4.85     3.5   94    84           84    -10
6    Retallick            3    58.5    6    6.35     3.0   97    87           87    -10
99   Big Eyed Girl        3    54.0    99   0.00     3.0   -     78           78    +0
99   Constable            5    59.0    99   0.00     0.0   -     94           94    +0
99   Quantum King         3    60.5    99   0.00     3.0   -     91           91    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Goliath Heron 86 86 86 ✓ Match 0.0 -
2 It's About Time 90 86 80 +6 3.0 -
3 Spanish Boy Line 85 84 85 -1 0.0
4 Kwite A Trip 100 93 93 ✓ Match 3.5 -
5 Visiway 94 83 84 -1 3.5 -
6 Retallick 97 96 87 +9 3.0 -
99 Big Eyed Girl - 96 78 +18 3.0 -
99 Constable - 95 94 +1 0.0 -
99 Quantum King - 99 91 +8 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