Official NHA Assessment

Race 9: WSB.CO.ZA AQUANAUT HANDICAP (Listed) (Open)

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Line Horse
Green Haze
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
4 / 9
Within 2 points
Significant Diffs
5 / 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    Shangani             4    55.5    1    0.00     2.0   98    91           98    +0
2    Green Haze           6    57.0    2    3.75     0.0   100   100          100   +0
3    Black Thorn          4    53.0    3    4.25     2.0   87    88           88    +1
4    Barak                5    52.0    4    5.25     0.0   80    88           88    +8
5    Imperial Ruby        5    60.0    5    5.75     0.0   106   104          104   -2
6    Smoking Hot          5    57.5    6    11.00    0.0   101   99           99    -2
7    Out Of Your League   5    59.0    7    19.00    0.0   104   102          102   -2
8    Don't Look Back      6    56.0    8    26.00    0.0   98    96           96    -2
9    Super Handsome       4    52.0    9    32.00    2.0   89    84           84    -5
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Shangani 98 118 98 +20 2.0 -
2 Green Haze Line 100 98 100 -2 0.0
3 Black Thorn 87 102 88 +14 2.0 -
4 Barak 80 97 88 +9 0.0 -
5 Imperial Ruby 106 105 104 +1 0.0 -
6 Smoking Hot 101 99 99 ✓ Match 0.0 -
7 Out Of Your League 104 77 102 -25 0.0 -
8 Don't Look Back 98 95 96 -1 0.0 -
9 Super Handsome 89 61 84 -23 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