Official NHA Assessment

Race 1: WELCOME TO THE HENNENMAN MEMORIAL JUVENILE PLATE (For 2 yo R100 000 Win BSA / RCS Bonus)

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Line Horse
None identified
Reference for assessment
Exact Matches
0 / 3
Calculated = Official
Close Matches
0 / 3
Within 2 points
Significant Diffs
0 / 3
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    Heath House          2    60.0    1    0.00     2.0   -     -            -     +0
2    Irish Wilma          2    52.5    2    7.25     2.0   -     -            -     +0
3    San Francisco        2    50.0    3    19.75    2.0   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Heath House - - - - 2.0 -
2 Irish Wilma - - - - 2.0 -
3 San Francisco - - - - 2.0 -
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