Official NHA Assessment

Race 5: RACING TODAY MR 87 OPEN HANDICAP (3-years-olds) (3 year olds)

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Line Horse
Golden Operator
Reference for assessment
Exact Matches
2 / 6
Calculated = Official
Close Matches
2 / 6
Within 2 points
Significant Diffs
0 / 6
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    Golden Operator      2    60.0    1    0.00     0.0   87    87           87    +0
2    Oklahoma Smokeshow   2    54.0    2    2.50     0.0   80    77           77    -3
3    Aquarius             3    57.0    3    2.90     2.5   81    78           78    -3
4    Never Never Land     3    59.0    4    4.15     2.5   85    81           81    -4
5    Blushing Bloom       2    56.5    5    4.35     0.0   83    80           80    -3
6    Jabari Thimba        2    58.5    6    6.75     0.0   84    84           84    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Golden Operator Line 87 87 87 ✓ Match 0.0
2 Oklahoma Smokeshow 80 80 77 +3 0.0 -
3 Aquarius 81 81 78 +3 2.5 -
4 Never Never Land 85 85 81 +4 2.5 -
5 Blushing Bloom 83 83 80 +3 0.0 -
6 Jabari Thimba 84 84 84 ✓ Match 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