Official NHA Assessment

Race 3: GUINEAS DAY 7 FEBRUARY MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Power Of Tiger
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
0 / 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    Precocious           2    60.0    1    0.00     3.5   79    69           69    -10
2    Power Of Tiger       3    60.0    2    4.20     5.0   66    66           66    +0
3    Mystical Butterfly   3    60.0    3    5.50     5.0   -     66           66    +66
4    Varachino's Champ    3    60.0    4    8.50     5.0   75    66           66    -9
5    Princess Of All      3    60.0    5    8.90     5.0   73    66           66    -7
6    Elegant Edge         3    60.0    6    15.60    5.0   -     66           66    +66
7    Sassy Lassie         2    60.0    7    20.60    3.5   62    69           69    +7
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Precocious 79 106 69 +37 3.5 -
2 Power Of Tiger Line 66 61 66 -5 5.0
3 Mystical Butterfly - 72 66 +6 5.0 -
4 Varachino's Champ 75 75 66 +9 5.0 -
5 Princess Of All 73 73 66 +7 5.0 -
6 Elegant Edge - 70 66 +4 5.0 -
7 Sassy Lassie 62 59 69 -10 3.5 -
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