Official NHA Assessment

Race 1: MWOS FC MERIT RATED 72 HANDICAP (Open)

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Line Horse
Red Top
Reference for assessment
Exact Matches
0 / 4
Calculated = Official
Close Matches
1 / 4
Within 2 points
Significant Diffs
3 / 4
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    Var Aglow            5    60.0    1    0.00     0.0   72    72           72    +0
2    Gypsy Express        5    58.0    2    1.25     0.0   68    68           68    +0
3    Red Top              5    59.5    3    3.25     0.0   71    71           71    +0
99   Jusrite              3    56.5    99   0.00     4.5   -     56           56    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Var Aglow 72 84 72 +12 0.0 -
2 Gypsy Express 68 58 68 -10 0.0 -
3 Red Top Line 71 70 71 -1 0.0
99 Jusrite - 68 56 +12 4.5 -
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