Official NHA Assessment

Race 1: #THISISRACING WELCOMES YOU JUVENILE PLATE (For 2 yo R60 000 Win BSA Bonus Series)

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Line Horse
None identified
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
0 / 7
Within 2 points
Significant Diffs
6 / 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    Shoemaker            2    60.0    1    0.00     0.0   -     -            -     +0
2    National Star        2    54.0    2    0.30     0.0   -     -            -     +0
3    Prime Example        2    57.0    3    6.80     0.0   -     -            -     +0
4    Oathkeeper           2    57.0    4    8.30     0.0   -     -            -     +0
5    Stella Et Clavis     2    57.0    5    13.05    0.0   -     -            -     +0
6    The Merciful         5    57.0    6    13.25    0.0   -     -            -     +0
99   Break Point          2    57.0    99   0.00     0.0   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Shoemaker - 109 - +109 0.0 -
2 National Star - 75 - +75 0.0 -
3 Prime Example - 93 - +93 0.0 -
4 Oathkeeper - 68 - +68 0.0 -
5 Stella Et Clavis - 64 - +64 0.0 -
6 The Merciful - 54 - +54 0.0 -
99 Break Point - 74 - - 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