Official NHA Assessment

Race 1: 4RACING WELCOMES YOU WORK RIDERS MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Bob
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    Lady Crusade         3    57.5    1    0.00     6.0   66    -5           -     -66
2    Bossy Boots          4    57.5    2    2.00     7.0   62    -7           52    -10
3    Bob                  3    60.0    3    3.50     6.0   -     -            -     +0
4    Major Strides        3    60.0    4    4.75     6.0   -     -            -     +0
5    Flying Puma          4    57.5    5    5.75     7.0   66    -7           56    -10
6    Rebels Princess      2    57.5    6    11.00    4.0   -     -1           -     +0
7    Mambo Line           3    57.5    7    12.25    6.0   43    -5           33    -10
8    Jet Speed            3    60.0    8    13.25    6.0   40    -            33    -7
9    Dream State          2    60.0    9    24.25    4.0   65    4            55    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Lady Crusade 66 67 - +67 6.0 -
2 Bossy Boots 62 51 52 -1 7.0 -
3 Bob Line - 52 - +52 6.0
4 Major Strides - - - ✓ Match 6.0 -
5 Flying Puma 66 62 56 +6 7.0 -
6 Rebels Princess - 55 - +55 4.0 -
7 Mambo Line 43 41 33 +8 6.0 -
8 Jet Speed 40 46 33 +13 6.0 -
9 Dream State 65 58 55 +3 4.0 -
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