Official NHA Assessment

Race 9: GREYVILLE CONVENTION CENTRE B STAKES (For All Horses)

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Line Horse
Super Fast
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
2 / 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    Tara Star            4    53.0    1    0.00     10.0  88    64           64    -24
2    Maphaka              2    56.5    2    0.50     5.5   84    80           80    -4
3    Wild Justice         2    55.0    3    1.55     5.5   93    77           83    -10
4    Super Fast           5    52.5    4    1.95     0.0   83    83           83    +0
5    Isikwishikwishi      2    56.5    5    3.00     5.5   85    80           80    -5
6    Hierkommiebokkie     5    58.5    6    3.05     0.0   98    95           95    -3
7    Top Gun              3    49.5    7    3.55     8.5   79    60           69    -10
8    Quandary             5    59.5    8    3.75     0.0   90    97           97    +7
99   Icy Blast            4    58.0    99   0.00     10.0  -     74           74    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Tara Star 88 96 64 +32 10.0 -
2 Maphaka 84 87 80 +7 5.5 -
3 Wild Justice 93 104 83 +21 5.5 -
4 Super Fast Line 83 83 83 ✓ Match 0.0
5 Isikwishikwishi 85 85 80 +5 5.5 -
6 Hierkommiebokkie 98 90 95 -5 0.0 -
7 Top Gun 79 71 69 +2 8.5 -
8 Quandary 90 88 97 -9 0.0 -
99 Icy Blast - 88 74 +14 10.0 -
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