Official NHA Assessment

Race 8: KLAWERVLEI STUD MIDDLE STAKES (For Horses 3-yrs and older with a nett rating of 102 & below)

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Line Horse
Icy Blast
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
8 / 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    Nordic Chief         4    54.0    1    0.00     3.5   86    88           88    +2
2    Icy Blast            4    60.5    2    1.50     3.5   101   101          101   +0
3    The Abdicator (IRE)  4    58.5    3    1.70     3.5   98    97           97    -1
4    Rod The Mod          3    58.5    4    2.10     3.0   91    98           98    +7
5    Tough Terrain        5    55.5    5    2.20     0.0   86    98           98    +12
6    Escarpment           4    53.0    6    2.25     3.5   79    86           86    +7
7    Mojo Man             4    57.0    7    4.25     3.5   94    94           94    +0
8    Franz Lehar          2    57.0    8    5.25     2.0   88    97           97    +9
9    Piroshka             5    58.5    9    7.00     0.0   93    104          104   +11
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Nordic Chief 86 94 88 +6 3.5 -
2 Icy Blast Line 101 88 101 -13 3.5
3 The Abdicator (IRE) 98 94 97 -3 3.5 -
4 Rod The Mod 91 90 98 -8 3.0 -
5 Tough Terrain 86 81 98 -17 0.0 -
6 Escarpment 79 79 86 -7 3.5 -
7 Mojo Man 94 80 94 -14 3.5 -
8 Franz Lehar 88 83 97 -14 2.0 -
9 Piroshka 93 72 104 -32 0.0 -
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