Official NHA Assessment

Race 1: 4RACING WELCOMES YOU WORK RIDERS MAIDEN HANDICAP (F & M) (For Maiden F & M. R15 000 Win bonus ROA Members)

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Line Horse
Ambitious Lady
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
4 / 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    Oh My Gucci Girl     3    52.0    1    0.00     1.5   68    49           68    +0
2    Plum Blossom         3    52.0    2    2.20     1.5   45    52           52    +7
3    Bacardi Babe         3    56.5    3    2.25     1.5   57    61           61    +4
4    Ambitious Lady       3    60.0    4    3.15     1.5   67    67           67    +0
5    Gloria Mundi         2    52.0    5    5.40     0.0   63    52           53    -10
6    Centrefold           2    52.0    6    9.20     0.0   50    52           52    +2
7    Chicago Lass         6    57.5    7    9.80     0.0   59    63           63    +4
8    Messalina            3    56.0    8    13.00    1.5   77    57           67    -10
99   Three Bells          3    52.0    99   0.00     1.5   -     49           49    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Oh My Gucci Girl 68 62 68 -6 1.5 -
2 Plum Blossom 45 53 52 +1 1.5 -
3 Bacardi Babe 57 56 61 -5 1.5 -
4 Ambitious Lady Line 67 62 67 -5 1.5
5 Gloria Mundi 63 66 53 +13 0.0 -
6 Centrefold 50 47 52 -5 0.0 -
7 Chicago Lass 59 43 63 -20 0.0 -
8 Messalina 77 71 67 +4 1.5 -
99 Three Bells - 43 49 -6 1.5 -
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