Official NHA Assessment

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

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Line Horse
Ibutho
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 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    Ice Kingdom          2    51.5    1    0.00     0.0   75    58           75    +0
2    Pewter Sky           3    57.5    2    0.40     5.0   72    65           65    -7
3    Ibutho               7    61.0    3    2.40     0.0   79    79           79    +0
4    Spirit Of My Fate    5    61.0    4    5.60     0.0   79    77           77    -2
5    Cyber Time           3    60.0    5    8.10     5.0   77    65           67    -10
6    Rodriguez            6    58.0    6    9.60     0.0   73    71           71    -2
7    Grimaldi             4    60.5    7    15.00    2.5   81    71           71    -10
8    Al's My Daddy        5    59.5    8    18.50    0.0   76    74           74    -2
9    Caramel Fudge        3    57.0    9    23.00    5.0   81    59           71    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Ice Kingdom 75 80 75 +5 0.0 -
2 Pewter Sky 72 71 65 +6 5.0 -
3 Ibutho Line 79 83 79 +4 0.0
4 Spirit Of My Fate 79 70 77 -7 0.0 -
5 Cyber Time 77 81 67 +14 5.0 -
6 Rodriguez 73 69 71 -2 0.0 -
7 Grimaldi 81 67 71 -4 2.5 -
8 Al's My Daddy 76 70 74 -4 0.0 -
9 Caramel Fudge 81 53 71 -18 5.0 -
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