Official NHA Assessment

Race 5: www.goldcircle.co.za MR 77 HANDICAP (Open)

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Line Horse
Time Taker
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
3 / 9
Within 2 points
Significant Diffs
4 / 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    Izapha               4    57.5    1    0.00     6.0   72    68           72    +0
2    Banha Bridge         5    59.0    2    0.40     0.0   75    88           88    +13
3    Time Taker           4    56.5    3    0.80     6.0   70    70           70    +0
4    Banzai Pipeline      7    56.0    4    0.90     0.0   69    81           81    +12
5    Knight Warrior       5    60.5    5    1.15     0.0   78    90           90    +12
6    Caesura              6    58.0    6    2.25     0.0   81    84           84    +3
7    Medal Of Freedom     3    58.0    7    3.65     9.5   78    63           68    -10
8    Seattle Beat         4    52.0    8    15.65    6.0   60    57           57    -3
99   Shoefella            2    58.5    99   0.00     0.0   -     82           82    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Izapha 72 74 72 +2 6.0 -
2 Banha Bridge 75 70 88 -18 0.0 -
3 Time Taker Line 70 55 70 -15 6.0
4 Banzai Pipeline 69 62 81 -19 0.0 -
5 Knight Warrior 78 74 90 -16 0.0 -
6 Caesura 81 81 84 -3 0.0 -
7 Medal Of Freedom 78 73 68 +5 9.5 -
8 Seattle Beat 60 55 57 -2 6.0 -
99 Shoefella - 82 82 ✓ Match 0.0 -
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