Official NHA Assessment

Race 6: www.trackandball.co.za MR 71 HANDICAP (Open)

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Line Horse
William Rufus
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 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    William Rufus        2    59.5    1    0.00     0.0   77    77           77    +0
2    Gentleman's Way      6    61.0    2    1.20     0.0   73    84           84    +11
3    Parmenion            5    57.0    3    1.40     0.0   72    75           75    +3
4    Lake Como            3    56.5    4    4.30     3.0   64    65           65    +1
5    Rugger Bugger        3    60.0    5    5.00     3.0   78    72           72    -6
6    Giambattista         3    58.0    6    5.25     3.0   67    68           68    +1
7    Preemptive Strike    4    56.5    7    5.55     2.0   67    67           67    +0
8    High Velocity        4    55.0    8    8.05     2.0   66    64           64    -2
99   Gardenia             5    60.5    99   0.00     0.0   -     79           79    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 William Rufus Line 77 88 77 +11 0.0
2 Gentleman's Way 73 73 84 -11 0.0 -
3 Parmenion 72 78 75 +3 0.0 -
4 Lake Como 64 61 65 -4 3.0 -
5 Rugger Bugger 78 77 72 +5 3.0 -
6 Giambattista 67 87 68 +19 3.0 -
7 Preemptive Strike 67 70 67 +3 2.0 -
8 High Velocity 66 50 64 -14 2.0 -
99 Gardenia - 75 79 -4 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