Official NHA Assessment

Race 4: www.goldcircle.co.za MR 77 HANDICAP (Open)

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Line Horse
Lazy Guy
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
2 / 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    Time Together        3    55.0    1    0.00     7.5   75    70           75    +0
2    Purple Operator      3    58.0    2    1.80     7.5   73    76           76    +3
3    Lazy Guy             4    53.5    3    2.20     9.0   64    64           64    +0
4    Quick Star           6    57.5    4    2.60     0.0   72    90           90    +18
5    Joshua Hotsnake      3    57.5    5    3.60     7.5   72    75           75    +3
6    Count Marsh          7    56.0    6    4.20     0.0   69    87           87    +18
7    Gimme A Rainbow      4    58.5    7    4.70     9.0   77    74           74    -3
8    Lucky Dollar         2    56.0    8    7.90     5.0   69    77           77    +8
99   Trade War            3    58.0    99   0.00     7.5   -     76           76    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Time Together 75 81 75 +6 7.5 -
2 Purple Operator 73 74 76 -2 7.5 -
3 Lazy Guy Line 64 61 64 -3 9.0
4 Quick Star 72 60 90 -30 0.0 -
5 Joshua Hotsnake 72 67 75 -8 7.5 -
6 Count Marsh 69 52 87 -35 0.0 -
7 Gimme A Rainbow 77 74 74 ✓ Match 9.0 -
8 Lucky Dollar 69 85 77 +8 5.0 -
99 Trade War - 70 76 -6 7.5 -
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