Official NHA Assessment

Race 1: 4RACING WELCOMES YOU WORK RIDERS MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Highveld Storm
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
2 / 12
Within 2 points
Significant Diffs
7 / 12
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    Oklahoma Twister     4    60.0    1    0.00     6.0   66    62           62    -4
2    Highveld Storm       3    60.0    2    1.20     5.0   64    64           64    +0
3    Like A Prayer        3    57.5    3    2.80     5.0   76    59           66    -10
4    Mizzen Sword         3    60.0    4    3.60     5.0   75    64           65    -10
5    Asian Delight        2    60.0    5    4.60     3.5   62    67           67    +5
6    Pursuit Of Fame      2    60.0    6    6.50     3.5   71    67           67    -4
7    Jinger Jam           3    57.5    7    6.60     5.0   -     59           59    +59
8    Summer Shade         4    60.0    8    7.60     6.0   58    62           62    +4
9    Superior             3    56.0    9    16.25    5.0   -     56           56    +56
10   King Beijing         5    60.0    10   19.50    0.0   40    74           74    +34
11   Mrs Wonderful        3    59.5    11   22.00    5.0   -     63           63    +63
99   Scarlet              3    57.5    99   0.00     5.0   -     59           59    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Oklahoma Twister 66 71 62 +9 6.0 -
2 Highveld Storm Line 64 66 64 +2 5.0
3 Like A Prayer 76 63 66 -3 5.0 -
4 Mizzen Sword 75 66 65 +1 5.0 -
5 Asian Delight 62 61 67 -6 3.5 -
6 Pursuit Of Fame 71 71 67 +4 3.5 -
7 Jinger Jam - 63 59 +4 5.0 -
8 Summer Shade 58 52 62 -10 6.0 -
9 Superior - 47 56 -9 5.0 -
10 King Beijing 40 37 74 -37 0.0 -
11 Mrs Wonderful - 20 63 -43 5.0 -
99 Scarlet - 47 59 -12 5.0 -
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