Official NHA Assessment

Race 6: NELSON MANDELA BAY RACING POLY CHALLENGE 1600 (Open - 3rd Leg (Non-Blk Type))

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Line Horse
Bush Tracker
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
4 / 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    King Regent          3    62.0    1    0.00     8.0   114   85           85    -29
2    Cherry Ano           5    62.0    2    1.25     0.0   111   105          105   -6
3    Bush Tracker         6    62.0    3    1.50     0.0   104   104          104   +0
4    The Mauritian        3    59.5    4    2.00     8.0   96    83           86    -10
5    Global Ally          6    61.0    5    2.50     0.0   98    101          101   +3
6    Inherit The Rain     4    61.0    6    2.60     5.0   99    91           91    -8
7    Euphoric             6    53.5    7    2.65     0.0   76    86           86    +10
99   Syx Hotfix           3    59.5    99   0.00     8.0   -     80           80    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 King Regent 114 106 85 +21 8.0 -
2 Cherry Ano 111 108 105 +3 0.0 -
3 Bush Tracker Line 104 100 104 -4 0.0
4 The Mauritian 96 100 86 +14 8.0 -
5 Global Ally 98 97 101 -4 0.0 -
6 Inherit The Rain 99 98 91 +7 5.0 -
7 Euphoric 76 62 86 -24 0.0 -
99 Syx Hotfix - 83 80 +3 8.0 -
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