Official NHA Assessment

Race 2: www.tabgold.co.za APPRENTICE CLASS 5 (Open. Benchmark at 60.0kg = 66)

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Line Horse
Run To Rio
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
3 / 8
Within 2 points
Significant Diffs
4 / 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    Lake Como            3    53.5    1    0.00     2.0   61    49           49    -12
2    Beach Palace         4    61.0    2    2.10     1.0   68    69           69    +1
3    Run To Rio           4    59.5    3    2.90     1.0   65    65           65    +0
4    Kimball O'Hara       2    58.0    4    4.00     0.0   70    63           63    -7
5    Forest Jump          8    55.5    5    4.10     0.0   65    58           58    -7
6    Yannakis             2    56.0    6    4.20     0.0   66    59           59    -7
7    Future Saint         4    54.0    7    5.00     1.0   59    52           52    -7
8    Move To Prove        2    55.0    8    10.90    0.0   66    56           56    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Lake Como 61 61 49 +12 2.0 -
2 Beach Palace 68 67 69 -2 1.0 -
3 Run To Rio Line 65 71 65 +6 1.0
4 Kimball O'Hara 70 61 63 -2 0.0 -
5 Forest Jump 65 62 58 +4 0.0 -
6 Yannakis 66 67 59 +8 0.0 -
7 Future Saint 59 53 52 +1 1.0 -
8 Move To Prove 66 63 56 +7 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