Official NHA Assessment

Race 1: SIBONGILE LIYABA WORK RIDERS MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Wonder Woman
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
7 / 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    Champagne Charlie    2    58.0    1    0.00     6.5   64    31           31    -33
2    Red Centre           2    58.0    2    1.25     6.5   -     31           31    +31
3    Wonder Woman         6    60.0    3    2.75     0.0   48    48           48    +0
4    Herewegojo           4    60.0    4    2.85     11.0  43    26           33    -10
5    Antonia Augusta      2    58.0    5    3.85     6.5   55    31           45    -10
6    Girl Scout           3    60.0    6    4.35     9.5   53    29           43    -10
7    Begonia              2    58.0    7    16.85    6.5   63    31           53    -10
8    Likeable             2    58.0    8    99.99    6.5   62    31           52    -10
99   Bold Leah            4    60.0    99   0.00     11.0  -     26           26    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Champagne Charlie 64 64 31 +33 6.5 -
2 Red Centre - 72 31 +41 6.5 -
3 Wonder Woman Line 48 43 48 -5 0.0
4 Herewegojo 43 35 33 +2 11.0 -
5 Antonia Augusta 55 57 45 +12 6.5 -
6 Girl Scout 53 54 43 +11 9.5 -
7 Begonia 63 66 53 +13 6.5 -
8 Likeable 62 62 52 +10 6.5 -
99 Bold Leah - 40 26 +14 11.0 -
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