Official NHA Assessment

Race 6: WWW.HIGHVELDRACING.CO.ZA MR 104 HANDICAP (Open)

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Line Horse
Indlamu
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
6 / 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    Al Muthana (AUS)     4    60.0    1    0.00     2.5   104   102          104   +0
2    Back To Black        4    52.0    2    0.25     2.5   86    86           86    +0
3    Indlamu              4    57.5    3    2.50     2.5   99    99           99    +0
4    Chijmes              6    59.5    4    2.75     0.0   103   108          108   +5
5    Sell High            6    55.5    5    4.00     0.0   95    99           99    +4
6    Sound Of Summer      4    59.5    6    4.25     2.5   103   102          102   -1
7    Leopold              5    56.5    7    4.50     0.0   97    100          100   +3
8    Bold Jazz            4    55.0    8    5.00     2.5   94    92           92    -2
9    Donald McDonald      5    59.0    9    6.00     0.0   102   105          105   +3
10   Tierra Del Fuego     6    61.0    10   6.50     0.0   106   109          109   +3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Al Muthana (AUS) 104 114 104 +10 2.5 -
2 Back To Black 86 89 86 +3 2.5 -
3 Indlamu Line 99 86 99 -13 2.5
4 Chijmes 103 94 108 -14 0.0 -
5 Sell High 95 93 99 -6 0.0 -
6 Sound Of Summer 103 99 102 -3 2.5 -
7 Leopold 97 79 100 -21 0.0 -
8 Bold Jazz 94 83 92 -9 2.5 -
9 Donald McDonald 102 107 105 +2 0.0 -
10 Tierra Del Fuego 106 104 109 -5 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