Official NHA Assessment

Race 1: www.goldcircle.co.za MAIDEN HANDICAP (For Maidens with 3 or more runs)

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Line Horse
Cotton Ron
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
6 / 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    Grande Lupo          2    59.5    1    0.00     3.5   70    56           70    +0
2    Cotton Ron           6    60.0    2    0.05     0.0   64    64           64    +0
3    Blitzen              2    50.5    3    2.55     3.5   57    38           47    -10
4    Olympic Standard     3    50.5    4    3.75     5.0   57    35           47    -10
5    Fire Tonic           3    59.5    5    4.15     5.0   70    53           60    -10
6    Vivir Mi Vida        2    58.0    6    5.55     3.5   67    53           57    -10
7    Master Of Defense    3    53.0    7    9.65     5.0   60    40           50    -10
99   Let Em Go            5    52.0    99   0.00     0.0   -     48           48    +0
99   Izuizorizuaint       2    58.0    99   0.00     3.5   -     53           53    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Grande Lupo 70 62 70 -8 3.5 -
2 Cotton Ron Line 64 59 64 -5 0.0
3 Blitzen 57 57 47 +10 3.5 -
4 Olympic Standard 57 53 47 +6 5.0 -
5 Fire Tonic 70 72 60 +12 5.0 -
6 Vivir Mi Vida 67 60 57 +3 3.5 -
7 Master Of Defense 60 63 50 +13 5.0 -
99 Let Em Go - 57 48 +9 0.0 -
99 Izuizorizuaint - 56 53 +3 3.5 -
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