Official NHA Assessment

Race 1: DOWNLOAD THE RACE CARD ONLINE www.goldcircle.co.za MR 67 HANDICAP (Open)

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Line Horse
Trafalgar Square
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
5 / 8
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    Addiena              3    59.5    1    0.00     5.0   71    56           71    +0
2    Trafalgar Square     6    61.0    2    2.50     0.0   69    69           69    +0
3    Grey Ocean           4    57.5    3    2.55     6.0   62    50           52    -10
4    Calvino              4    49.5    4    3.15     6.0   51    34           41    -10
5    Beckoning Beauty     4    62.0    5    3.75     6.0   71    59           61    -10
6    Woodstock Festival   6    57.0    6    6.45     0.0   61    61           61    +0
7    Looking Hot          3    58.5    7    10.15    5.0   64    54           54    -10
99   Captains Walk        3    57.0    99   0.00     5.0   -     51           51    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Addiena 71 83 71 +12 5.0 -
2 Trafalgar Square Line 69 69 69 ✓ Match 0.0
3 Grey Ocean 62 61 52 +9 6.0 -
4 Calvino 51 51 41 +10 6.0 -
5 Beckoning Beauty 71 75 61 +14 6.0 -
6 Woodstock Festival 61 57 61 -4 0.0 -
7 Looking Hot 64 68 54 +14 5.0 -
99 Captains Walk - 54 51 +3 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