Official NHA Assessment

Race 4: BETWAY BACK THE BOKS MAIDEN PLATE (F & M) (For Maiden F & M. R15 000 Win bonus ROA Members)

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Line Horse
Lorna Lilly
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
7 / 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    Lorna Lilly          3    60.0    1    0.00     8.0   67    67           67    +0
2    Right Turn On Red    3    58.0    2    0.50     8.0   -     68           68    +68
3    Boom Boom            4    58.0    3    1.75     5.0   61    72           72    +11
4    Villa Semaya         2    58.0    4    2.75     0.0   75    81           81    +6
5    She's A Klawer       2    60.0    5    4.00     0.0   56    84           84    +28
6    Scarlet              3    58.0    6    13.00    8.0   -     63           63    +63
99   Life Lesson          3    58.0    99   0.00     8.0   -     63           63    +0
99   Easy On Me           3    58.0    99   0.00     8.0   -     63           63    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Lorna Lilly Line 67 50 67 -17 8.0
2 Right Turn On Red - 77 68 +9 8.0 -
3 Boom Boom 61 81 72 +9 5.0 -
4 Villa Semaya 75 59 81 -22 0.0 -
5 She's A Klawer 56 50 84 -34 0.0 -
6 Scarlet - 47 63 -16 8.0 -
99 Life Lesson - 49 63 -14 8.0 -
99 Easy On Me - 67 63 +4 8.0 -
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