Official NHA Assessment

Race 6: www.trackandball.co.za FM 86 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Chelsea Flower
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
6 / 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    Bella Siccome        3    55.5    1    0.00     9.5   79    57           79    +0
2    Oh So Squishy        3    56.0    2    0.90     9.5   88    64           78    -10
3    Chelsea Flower       6    55.0    3    3.50     0.0   78    78           78    +0
4    Monashada            3    59.5    4    3.55     9.5   87    68           77    -10
5    Southern Cape        3    59.0    5    3.95     9.5   86    66           76    -10
6    Desert Rose          3    53.0    6    4.35     9.5   74    53           64    -10
7    Electric Surge       5    58.0    7    5.85     0.0   82    81           81    -1
99   Sacred Blues         5    51.0    99   0.00     0.0   -     67           67    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Bella Siccome 79 93 79 +14 9.5 -
2 Oh So Squishy 88 68 78 -10 9.5 -
3 Chelsea Flower Line 78 77 78 -1 0.0
4 Monashada 87 94 77 +17 9.5 -
5 Southern Cape 86 96 76 +20 9.5 -
6 Desert Rose 74 75 64 +11 9.5 -
7 Electric Surge 82 83 81 +2 0.0 -
99 Sacred Blues - 76 67 +9 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