Official NHA Assessment

Race 7: HOLLYWOODBETS DIANA STAKES (Grade 3) (Fillies and Mares at Weight For Age + Penalties)

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Line Horse
Gimme's Lassie
Reference for assessment
Exact Matches
2 / 7
Calculated = Official
Close Matches
2 / 7
Within 2 points
Significant Diffs
4 / 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    Golden Hostess       2    60.0    1    0.00     0.0   117   100          100   -17
2    Happy Chance         2    60.0    2    3.25     0.0   109   102          102   -7
3    Cala Muretta         2    55.5    3    3.75     0.0   101   92           92    -9
4    Gimme's Lassie       5    60.0    4    3.85     0.0   101   101          101   +0
5    Silverlinks          2    60.0    5    5.35     0.0   97    100          100   +3
6    Who Do You Love      2    60.0    6    5.65     0.0   99    100          100   +1
7    Hierkommiebokkie     5    60.0    7    7.15     0.0   86    100          100   +14
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Golden Hostess 117 112 100 +12 0.0 -
2 Happy Chance 109 118 102 +16 0.0 -
3 Cala Muretta 101 92 92 ✓ Match 0.0 -
4 Gimme's Lassie Line 101 101 101 ✓ Match 0.0
5 Silverlinks 97 94 100 -6 0.0 -
6 Who Do You Love 99 96 100 -4 0.0 -
7 Hierkommiebokkie 86 90 100 -10 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