Official NHA Assessment

Race 6: SABLE FLYERS (LR) (Fillies and Mares)

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Line Horse
Sun Bird
Reference for assessment
Exact Matches
1 / 4
Calculated = Official
Close Matches
2 / 4
Within 2 points
Significant Diffs
2 / 4
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    Brianna              4    62.0    1    0.00     4.5   96    101          101   +5
2    Sun Bird             3    57.5    2    6.00     7.0   87    87           87    +0
3    Emerald Floe         4    59.0    3    10.00    4.5   90    95           95    +5
4    Zavannahgold         2    52.5    4    27.00    0.0   78    91           91    +13
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Brianna 96 103 101 +2 4.5 -
2 Sun Bird Line 87 87 87 ✓ Match 7.0
3 Emerald Floe 90 82 95 -13 4.5 -
4 Zavannahgold 78 78 91 -13 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