Official NHA Assessment

Race 3: www.tabgold.co.za CLASS 3 (Open. Benchmark at 60.0kg = 96)

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Line Horse
Imposing
Reference for assessment
Exact Matches
1 / 13
Calculated = Official
Close Matches
4 / 13
Within 2 points
Significant Diffs
5 / 13
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    Tyrconnell           5    53.0    1    0.00     0.0   82    81           81    -1
2    Mr Hotstepper        2    52.5    2    1.10     0.0   90    84           84    -6
3    Imposing             2    51.0    3    1.15     0.0   81    81           81    +0
4    Bowie                7    56.0    4    2.35     0.0   88    89           89    +1
5    Queue Wing           7    56.5    5    2.75     0.0   89    90           90    +1
6    Parmenion            5    53.5    6    2.85     0.0   83    84           84    +1
7    Lindbergh            2    55.0    7    3.10     0.0   86    87           87    +1
8    Mr Master Starter    6    58.5    8    4.90     0.0   93    92           92    -1
9    Ibutho               7    54.0    9    5.40     0.0   84    83           83    -1
10   Common Grounds       4    58.5    10   5.70     2.5   93    87           87    -6
11   Shampompo Shampizi   7    61.0    11   7.20     0.0   98    97           97    -1
12   Mexican Pete         3    60.0    12   7.60     4.0   96    87           87    -9
99   Open Highway         4    55.0    99   0.00     2.5   -     80           80    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Tyrconnell 82 82 81 +1 0.0 -
2 Mr Hotstepper 90 87 84 +3 0.0 -
3 Imposing Line 81 107 81 +26 0.0
4 Bowie 88 82 89 -7 0.0 -
5 Queue Wing 89 81 90 -9 0.0 -
6 Parmenion 83 78 84 -6 0.0 -
7 Lindbergh 86 85 87 -2 0.0 -
8 Mr Master Starter 93 97 92 +5 0.0 -
9 Ibutho 84 83 83 ✓ Match 0.0 -
10 Common Grounds 93 86 87 -1 2.5 -
11 Shampompo Shampizi 98 93 97 -4 0.0 -
12 Mexican Pete 96 84 87 -3 4.0 -
99 Open Highway - 94 80 +14 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