Official NHA Assessment

Race 3: WSB CLUB PRIVE GRADUATION PLATE (F & M) (For 1 & 2 Time Winners & Maidens (F & M))

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Line Horse
Bosum Buddy
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
1 / 6
Within 2 points
Significant Diffs
5 / 6
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    Sorceress Supreme    3    57.5    1    0.00     6.0   95    92           78    -17
2    Garlandsofgreenery   3    57.5    2    3.00     6.0   94    92           92    -2
3    Bosum Buddy          3    57.5    3    8.50     6.0   92    92           92    +0
4    Valieva              3    55.5    4    10.75    6.0   87    88           88    +1
5    Perini Palace        4    56.5    5    13.25    7.0   52    88           88    +36
6    Sigrid Swing         4    60.0    6    14.50    7.0   79    95           95    +16
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Sorceress Supreme 95 98 78 +20 6.0 -
2 Garlandsofgreenery 94 94 92 +2 6.0 -
3 Bosum Buddy Line 92 85 92 -7 6.0
4 Valieva 87 78 88 -10 6.0 -
5 Perini Palace 52 56 88 -32 7.0 -
6 Sigrid Swing 79 70 95 -25 7.0 -
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