Official NHA Assessment

Race 9: WSB R10 000 1ST DEPOSIT MATCH CARADOC GOLD CUP (Grade 3) (Open)

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Line Horse
Green Haze
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
5 / 8
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    Nebraas              8    58.0    1    0.00     0.0   104   102          102   -2
2    Black Thorn          4    52.5    2    0.60     2.0   91    93           93    +2
3    Green Haze           6    56.0    3    4.25     0.0   100   100          100   +0
4    Imperial Ruby        5    58.0    4    4.75     0.0   106   102          102   -4
5    Barak                5    52.0    5    6.50     0.0   87    90           90    +3
6    Smoking Hot          5    53.5    6    7.00     0.0   101   93           93    -8
7    African Adventure    6    60.0    7    9.00     0.0   107   106          106   -1
8    Masaaken (AUS)       4    50.0    8    9.25     2.0   77    82           82    +5
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Nebraas 104 101 102 -1 0.0 -
2 Black Thorn 91 102 93 +9 2.0 -
3 Green Haze Line 100 98 100 -2 0.0
4 Imperial Ruby 106 105 102 +3 0.0 -
5 Barak 87 97 90 +7 0.0 -
6 Smoking Hot 101 99 93 +6 0.0 -
7 African Adventure 107 100 106 -6 0.0 -
8 Masaaken (AUS) 77 92 82 +10 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