Official NHA Assessment

Race 7: BYERLEY TURK (Grade 3) (For 3 year olds)

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Line Horse
Cats Pajamas
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 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    Oxalis Gold          3    54.5    1    0.00     2.5   97    101          101   +4
2    Cats Pajamas         3    60.0    2    2.00     2.5   115   115          115   +0
3    O'Tenikwa            3    57.0    3    2.20     2.5   106   109          109   +3
4    Dantonfromsandton    3    57.0    4    4.50     2.5   106   106          106   +0
5    Bourbon Warrior      3    57.0    5    4.65     2.5   96    106          106   +10
6    Chinaberry           3    57.0    6    5.65     2.5   92    106          106   +14
7    Golden Rule          3    57.0    7    7.85     2.5   97    106          106   +9
99   Cymric               3    58.5    99   0.00     2.5   -     109          109   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Oxalis Gold 97 107 101 +6 2.5 -
2 Cats Pajamas Line 115 119 115 +4 2.5
3 O'Tenikwa 106 121 109 +12 2.5 -
4 Dantonfromsandton 106 96 106 -10 2.5 -
5 Bourbon Warrior 96 99 106 -7 2.5 -
6 Chinaberry 92 58 106 -48 2.5 -
7 Golden Rule 97 99 106 -7 2.5 -
99 Cymric - 99 109 -10 2.5 -
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