Official NHA Assessment

Race 2: RACING TODAY MR 66 HANDICAP (Open)

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Line Horse
Full Go
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
3 / 7
Within 2 points
Significant Diffs
3 / 7
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    Vava Vegas           5    52.5    1    0.00     0.0   59    48           59    +0
2    Gimme The Flame      5    59.0    2    0.50     0.0   64    66           66    +2
3    Fifth Of July        5    58.5    3    1.25     0.0   66    64           64    -2
4    Full Go              6    55.0    4    1.75     0.0   56    56           56    +0
5    Carnelo              6    58.0    5    5.50     0.0   62    59           59    -3
6    Mariachi Madness     2    58.0    6    7.75     0.0   66    59           59    -7
99   Safe Space           5    57.5    99   0.00     0.0   -     58           58    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Vava Vegas 59 58 59 -1 0.0 -
2 Gimme The Flame 64 50 66 -16 0.0 -
3 Fifth Of July 66 63 64 -1 0.0 -
4 Full Go Line 56 59 56 +3 0.0
5 Carnelo 62 75 59 +16 0.0 -
6 Mariachi Madness 66 57 59 -2 0.0 -
99 Safe Space - 83 58 +25 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