Official NHA Assessment

Race 5: BETONTAB.CO.ZA MIDDLE STAKES (For horses with nett rating of 101 and below)

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Line Horse
Imperial Master
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
1 / 7
Within 2 points
Significant Diffs
5 / 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    White Fang           4    58.0    1    0.00     3.5   85    85           85    +0
2    Flying First Class   4    57.5    2    3.00     3.5   89    87           87    -2
3    Imperial Master      4    60.0    3    5.10     3.5   89    89           89    +0
4    Banha Bridge         5    54.0    4    9.50     0.0   75    84           84    +9
5    Out Of Your League   5    57.5    5    11.00    0.0   91    91           91    +0
6    Arlington Action     6    58.0    6    11.10    0.0   84    92           92    +8
99   Allthewayfromusa     2    50.0    99   0.00     0.0   -     76           76    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 White Fang 85 91 85 +6 3.5 -
2 Flying First Class 89 82 87 -5 3.5 -
3 Imperial Master Line 89 90 89 +1 3.5
4 Banha Bridge 75 70 84 -14 0.0 -
5 Out Of Your League 91 77 91 -14 0.0 -
6 Arlington Action 84 73 92 -19 0.0 -
99 Allthewayfromusa - 57 76 -19 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