Official NHA Assessment

Race 5: BSA NOVEMBER TWO YEAR OLD SALE ADVANCE PLATE ()

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Line Horse
Abayyaan
Reference for assessment
Exact Matches
0 / 5
Calculated = Official
Close Matches
1 / 5
Within 2 points
Significant Diffs
3 / 5
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    Abayyaan             3    60.0    1    0.00     5.0   99    99           99    +0
2    Action Zone          3    55.0    2    1.75     5.0   85    92           92    +7
3    Jacky Sparrow        3    54.5    3    2.25     5.0   82    91           91    +9
4    Regulate             3    52.5    4    2.35     5.0   76    86           86    +10
5    Only Him             4    59.0    5    8.35     2.5   91    102          102   +11
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Abayyaan Line 99 94 99 -5 5.0
2 Action Zone 85 90 92 -2 5.0 -
3 Jacky Sparrow 82 80 91 -11 5.0 -
4 Regulate 76 79 86 -7 5.0 -
5 Only Him 91 87 102 -15 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