Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY MAIDEN PLATE (F & M) (For Maiden F & M. R15 000 Win bonus ROA Members)

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Line Horse
Si Gioca
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
8 / 10
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    Enchanted Sky        2    60.0    1    0.00     4.0   80    70           70    -10
2    Si Gioca             2    60.0    2    3.00     4.0   70    70           70    +0
3    What Now My Gal      2    60.0    3    5.00     4.0   60    70           70    +10
4    Tune Again           6    60.0    4    5.05     0.0   50    78           78    +28
5    Bella Attrice        2    60.0    5    5.15     4.0   64    70           70    +6
6    Gotcha Buzz          2    60.0    6    6.40     4.0   75    70           70    -5
7    Ntombencane          3    60.0    7    13.65    6.0   -     66           66    +66
8    Future Contract      3    60.0    8    13.70    6.0   42    66           66    +24
99   Lady D'arbanville    2    60.0    99   0.00     4.0   -     70           70    +0
99   Heartlight           2    60.0    99   0.00     4.0   -     70           70    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Enchanted Sky 80 78 70 +8 4.0 -
2 Si Gioca Line 70 62 70 -8 4.0
3 What Now My Gal 60 47 70 -23 4.0 -
4 Tune Again 50 50 78 -28 0.0 -
5 Bella Attrice 64 66 70 -4 4.0 -
6 Gotcha Buzz 75 61 70 -9 4.0 -
7 Ntombencane - 38 66 -28 6.0 -
8 Future Contract 42 40 66 -26 6.0 -
99 Lady D'arbanville - 70 70 ✓ Match 4.0 -
99 Heartlight - 48 70 -22 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