Official NHA Assessment

Race 5: RUFFIAN STAKES (Listed) (For 2 yof R100 000 Win BSA Bonus Series)

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Line Horse
None identified
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
8 / 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    Mrs Geriatrix        2    60.0    1    0.00     3.0   -     -            -     +0
2    Ripple Effect        2    60.0    2    0.75     3.0   -     -            -     +0
3    Callmewhenuneedme    4    57.0    3    2.75     5.0   -     -            -     +0
4    Miss Hannigan        4    60.0    4    3.00     5.0   -     -            -     +0
5    Virginia Beach       2    60.0    5    7.00     3.0   -     -            -     +0
6    Courageous           4    57.0    6    8.50     5.0   -     -            -     +0
7    Givers Grace         2    60.0    7    10.50    3.0   -     -            -     +0
8    Drumskitt            2    57.0    8    15.00    3.0   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Mrs Geriatrix - 112 - +112 3.0 -
2 Ripple Effect - 102 - +102 3.0 -
3 Callmewhenuneedme - 97 - +97 5.0 -
4 Miss Hannigan - 100 - +100 5.0 -
5 Virginia Beach - 82 - +82 3.0 -
6 Courageous - 62 - +62 5.0 -
7 Givers Grace - 61 - +61 3.0 -
8 Drumskitt - 72 - +72 3.0 -
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