Official NHA Assessment

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

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Line Horse
Bright Future
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
7 / 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    Newton Heath         3    60.0    1    0.00     7.5   60    72           66    +6
2    Bright Future        3    59.0    2    0.50     7.5   70    70           70    +0
3    World Soprano        2    59.0    3    1.75     5.0   64    75           75    +11
4    Serendipitous        3    56.5    4    3.00     7.5   73    65           65    -8
5    Fantasy Girl         2    56.5    5    4.75     5.0   70    70           70    +0
6    Vila Foz             3    59.0    6    11.00    7.5   -     70           70    +70
7    Luck Struck          4    60.0    7    13.25    9.0   -     69           69    +69
99   And Action           4    60.0    99   0.00     9.0   -     69           69    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Newton Heath 60 60 66 -6 7.5 -
2 Bright Future Line 70 60 70 -10 7.5
3 World Soprano 64 65 75 -10 5.0 -
4 Serendipitous 73 60 65 -5 7.5 -
5 Fantasy Girl 70 58 70 -12 5.0 -
6 Vila Foz - 57 70 -13 7.5 -
7 Luck Struck - 30 69 -39 9.0 -
99 And Action - 62 69 -7 9.0 -
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