Official NHA Assessment

Race 7: IN LOVING MEMORY OF JOHAN BESTER MIDDLE STAKES (For horses with nett rating of 101 and below)

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Line Horse
Chasing Happiness
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    Trompie              2    58.0    1    0.00     1.0   101   99           99    -2
2    Karangetang          2    60.0    2    2.50     1.0   95    103          103   +8
3    Chasing Happiness    3    56.5    3    3.25     2.0   94    94           94    +0
4    Law Of Success       3    52.5    4    3.50     2.0   84    86           86    +2
5    Danilo Danilovitch   3    62.0    5    7.25     2.0   98    105          105   +7
6    Nkandla Gold         4    54.0    6    9.50     2.5   86    88           88    +2
7    Rollwiththepunches   6    59.5    7    10.25    0.0   100   104          104   +4
8    Linkin Navigator     2    58.0    8    12.25    1.0   92    99           99    +7
9    Far Away Winter      2    62.0    9    19.25    1.0   99    107          107   +8
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Trompie 101 107 99 +8 1.0 -
2 Karangetang 95 95 103 -8 1.0 -
3 Chasing Happiness Line 94 110 94 +16 2.0
4 Law Of Success 84 81 86 -5 2.0 -
5 Danilo Danilovitch 98 89 105 -16 2.0 -
6 Nkandla Gold 86 63 88 -25 2.5 -
7 Rollwiththepunches 100 90 104 -14 0.0 -
8 Linkin Navigator 92 77 99 -22 1.0 -
9 Far Away Winter 99 99 107 -8 1.0 -
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