Official NHA Assessment

Race 1: TACE MAIDEN PLATE (Maiden Plate Colts & Geldings to carry)

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Line Horse
Coccolina
Reference for assessment
Exact Matches
1 / 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    Coccolina            3    57.5    1    0.00     2.5   67    67           67    +0
2    Tranquil Judi        3    57.5    2    6.00     2.5   -     67           67    +67
3    Roman Law            3    60.0    3    18.00    2.5   -     72           72    +72
4    Queen Of Montmatre   3    57.5    4    25.00    2.5   -     67           67    +67
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Coccolina Line 67 67 67 ✓ Match 2.5
2 Tranquil Judi - - 67 -67 2.5 -
3 Roman Law - - 72 -72 2.5 -
4 Queen Of Montmatre - 39 67 -28 2.5 -
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