Official NHA Assessment

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Line Horse
Bossy Boots
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    Bossy Boots          4    57.5    1    0.00     5.0   74    74           74    +0
2    Jumping Analia       2    57.5    2    0.25     3.0   67    78           78    +11
3    Waitforgreenlight    2    53.5    3    1.25     3.0   70    70           70    +0
4    La Chance            4    57.5    4    4.35     5.0   -     74           74    +74
5    Bregardt             4    60.0    5    5.10     5.0   70    79           79    +9
6    Angel Wings          3    57.5    6    5.85     4.5   48    75           75    +27
7    Trippis Tune         3    60.0    7    6.10     4.5   -     80           80    +80
8    Hat Man              4    60.0    8    6.35     5.0   64    79           79    +15
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Bossy Boots Line 74 51 74 -23 5.0
2 Jumping Analia 67 72 78 -6 3.0 -
3 Waitforgreenlight 70 67 70 -3 3.0 -
4 La Chance - 54 74 -20 5.0 -
5 Bregardt 70 52 79 -27 5.0 -
6 Angel Wings 48 54 75 -21 4.5 -
7 Trippis Tune - 70 80 -10 4.5 -
8 Hat Man 64 60 79 -19 5.0 -
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