Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY RACING MAIDEN PLATE (3-year-old Fillies) (For Maiden 3-year-old Fillies)

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Line Horse
Glitterfox
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
6 / 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    Begonia              2    60.0    1    0.00     6.5   63    64           64    +1
2    Kind Of Blue         2    60.0    2    0.05     6.5   -     64           64    +64
3    Divine Design        3    60.0    3    0.15     9.5   -     58           58    +58
4    Glitterfox           2    60.0    4    2.40     6.5   64    64           64    +0
5    Nellie Bly           2    60.0    5    5.65     6.5   71    64           64    -7
6    Kommetjie            2    60.0    6    6.65     6.5   42    64           64    +22
7    Mia Calice           2    60.0    7    7.90     6.5   65    64           64    -1
8    Make A Deal          3    60.0    8    8.15     9.5   -     58           58    +58
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Begonia 63 66 64 +2 6.5 -
2 Kind Of Blue - 58 64 -6 6.5 -
3 Divine Design - 71 58 +13 9.5 -
4 Glitterfox Line 64 57 64 -7 6.5
5 Nellie Bly 71 71 64 +7 6.5 -
6 Kommetjie 42 49 64 -15 6.5 -
7 Mia Calice 65 60 64 -4 6.5 -
8 Make A Deal - 40 58 -18 9.5 -
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