Official NHA Assessment

Race 9: 4RACING SUN CHARIOT HANDICAP (For Fillies and Mares - Non-Black Type)

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Line Horse
Namaqua Blossom
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
9 / 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    Apache Fighter       4    52.5    1    0.00     2.0   71    88           71    +0
2    Kind Judy            4    55.5    2    3.25     2.0   80    97           97    +17
3    Namaqua Blossom      3    53.0    3    4.00     5.0   85    85           85    +0
4    Opera Glass          4    58.0    4    5.25     2.0   85    99           99    +14
5    Capetown Beauty      3    57.5    5    5.30     5.0   85    92           92    +7
6    Last Cheer           5    52.0    6    5.35     0.0   73    91           91    +18
7    Flying First Class   4    60.0    7    6.75     2.0   89    103          103   +14
8    Electric Surge       5    55.5    8    17.00    0.0   80    98           98    +18
99   Quiet Rebellion      3    53.0    99   0.00     5.0   -     83           83    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Apache Fighter 71 81 71 +10 2.0 -
2 Kind Judy 80 73 97 -24 2.0 -
3 Namaqua Blossom Line 85 75 85 -10 5.0
4 Opera Glass 85 81 99 -18 2.0 -
5 Capetown Beauty 85 76 92 -16 5.0 -
6 Last Cheer 73 72 91 -19 0.0 -
7 Flying First Class 89 82 103 -21 2.0 -
8 Electric Surge 80 83 98 -15 0.0 -
99 Quiet Rebellion - 74 83 -9 5.0 -
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