Official NHA Assessment

Race 7: COLORADO KING STAKES (Grade 2) (Open)

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Line Horse
Zillzaal
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
5 / 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    Second Base          4    60.0    1    0.00     2.0   116   113          113   -3
2    Zillzaal             6    60.0    2    0.25     0.0   117   117          117   +0
3    Sparkling Water      4    58.5    3    0.50     2.0   112   117          117   +5
4    Johnny Hero          5    60.0    4    4.00     0.0   110   119          119   +9
5    Shangani             4    60.0    5    4.75     2.0   105   113          113   +8
6    Golden Pheasant      7    60.0    6    5.75     0.0   110   117          117   +7
7    Shango               5    60.0    7    6.00     0.0   109   117          117   +8
8    Marchingontogether   6    60.0    8    13.50    0.0   110   117          117   +7
9    Majestic Mozart      6    60.0    9    22.00    0.0   117   117          117   +0
10   Imperial Ruby        5    60.0    10   99.99    0.0   106   117          117   +11
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Second Base 116 99 113 -14 2.0 -
2 Zillzaal Line 117 112 117 -5 0.0
3 Sparkling Water 112 122 117 +5 2.0 -
4 Johnny Hero 110 87 119 -32 0.0 -
5 Shangani 105 118 113 +5 2.0 -
6 Golden Pheasant 110 113 117 -4 0.0 -
7 Shango 109 105 117 -12 0.0 -
8 Marchingontogether 110 102 117 -15 0.0 -
9 Majestic Mozart 117 112 117 -5 0.0 -
10 Imperial Ruby 106 105 117 -12 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