Official NHA Assessment

Race 2: SHARON KOTZEN MAIDEN PLATE (3-year-old Fillies) (For Maiden 3 year-old Fillies)

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Line Horse
Olive Oyl
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
2 / 7
Within 2 points
Significant Diffs
5 / 7
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    Haze And Smoke       2    60.0    1    0.00     0.0   -     72           6     +6
2    Olive Oyl            2    60.0    2    1.50     0.0   75    75           75    +0
3    Shori Kai            3    60.0    3    4.00     8.5   -     56           56    +56
4    Morfeliha            2    60.0    4    4.10     0.0   -     73           73    +73
5    Royal Missy          2    60.0    5    6.35     0.0   -     72           72    +72
6    Seconds Out          2    60.0    6    11.60    0.0   57    72           72    +15
7    Call Me Clarion      2    60.0    7    11.70    0.0   55    72           72    +17
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Haze And Smoke - 85 6 +79 0.0 -
2 Olive Oyl Line 75 77 75 +2 0.0
3 Shori Kai - 70 56 +14 8.5 -
4 Morfeliha - 74 73 +1 0.0 -
5 Royal Missy - 83 72 +11 0.0 -
6 Seconds Out 57 60 72 -12 0.0 -
7 Call Me Clarion 55 57 72 -15 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