Official NHA Assessment

Race 6: UMZIMKHULU STAKES (Grade 3) (For 3 year-old Fillies)

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Line Horse
Supreme Quest
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
7 / 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    Supreme Quest        3    60.0    1    0.00     2.0   108   108          108   +0
2    Kailene              3    60.0    2    1.40     2.0   102   111          111   +9
3    Bold Act             3    60.0    3    3.10     2.0   105   110          110   +5
4    Mercury Rising       3    60.0    4    4.40     2.0   105   108          108   +3
5    Sashay Away          3    60.0    5    4.45     2.0   89    108          108   +19
6    Aisling              3    60.0    6    5.75     2.0   87    108          108   +21
7    October Song         3    60.0    7    11.55    2.0   85    108          108   +23
99   Look Yourself        3    60.0    99   0.00     2.0   -     108          108   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Supreme Quest Line 108 92 108 -16 2.0
2 Kailene 102 79 111 -32 2.0 -
3 Bold Act 105 77 110 -33 2.0 -
4 Mercury Rising 105 106 108 -2 2.0 -
5 Sashay Away 89 88 108 -20 2.0 -
6 Aisling 87 66 108 -42 2.0 -
7 October Song 85 64 108 -44 2.0 -
99 Look Yourself - 94 108 -14 2.0 -
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