Official NHA Assessment

Race 1: 4RACING WELCOMES YOU MAIDEN 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 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
0 / 9
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    Gimme Some Luck      2    57.5    1    0.00     2.5   -     -            -     +0
2    Sheriff Bill Brown   2    60.0    2    8.00     2.5   -     -            -     +0
3    Stage One            2    60.0    3    10.40    2.5   -     -            -     +0
4    Expert Witness       2    60.0    4    10.65    2.5   -     -            -     +0
5    Midnight Show        2    60.0    5    11.75    2.5   -     -            -     +0
6    Two Tigers           2    60.0    6    14.55    2.5   -     -            -     +0
7    Energia              2    57.5    7    14.75    2.5   -     -            -     +0
8    Revitalise           2    60.0    8    99.99    2.5   -     -            -     +0
99   Red Viking           2    58.5    99   0.00     2.5   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Gimme Some Luck - - - - 2.5 -
2 Sheriff Bill Brown - - - - 2.5 -
3 Stage One - - - - 2.5 -
4 Expert Witness - - - - 2.5 -
5 Midnight Show - - - - 2.5 -
6 Two Tigers - - - - 2.5 -
7 Energia - - - - 2.5 -
8 Revitalise - - - - 2.5 -
99 Red Viking - - - - 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