Official NHA Assessment

Race 4: www.tabgold.co.za MR 98 HANDICAP (Open)

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Line Horse
Ralph The Rascal
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
5 / 10
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    Mr Gonzales          4    56.5    1    0.00     3.0   91    83           91    +0
2    Ideal Act            3    56.0    2    1.40     5.0   90    81           81    -9
3    Ralph The Rascal     8    53.5    3    2.30     0.0   85    85           85    +0
4    Priceless Ruler      6    61.0    4    2.40     0.0   103   100          100   -3
5    Passage Of Power     6    56.0    5    2.45     0.0   90    90           90    +0
6    Victory Twist        4    52.0    6    3.35     3.0   81    75           75    -6
7    Bowie                7    58.0    7    4.75     0.0   99    92           92    -7
8    Desolate Road        6    50.5    8    5.15     0.0   84    77           77    -7
9    His Choice           4    56.5    9    5.65     3.0   91    83           83    -8
10   Aj's Captain         3    55.5    10   10.85    5.0   89    77           79    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Mr Gonzales 91 97 91 +6 3.0 -
2 Ideal Act 90 86 81 +5 5.0 -
3 Ralph The Rascal Line 85 73 85 -12 0.0
4 Priceless Ruler 103 99 100 -1 0.0 -
5 Passage Of Power 90 76 90 -14 0.0 -
6 Victory Twist 81 80 75 +5 3.0 -
7 Bowie 99 82 92 -10 0.0 -
8 Desolate Road 84 82 77 +5 0.0 -
9 His Choice 91 81 83 -2 3.0 -
10 Aj's Captain 89 71 79 -8 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