Official NHA Assessment

Race 5: OLYMPIC DUEL STAKES (Listed) (For Fillies and Mares)

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Line Horse
Body Electric
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
5 / 8
Within 2 points
Significant Diffs
2 / 8
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    Kwinta's Light       3    60.5    1    0.00     1.5   105   101          101   -4
2    Body Electric        2    52.0    2    3.00     0.5   86    86           86    +0
3    Gimme's Lassie       5    59.5    3    4.00     0.0   104   102          102   -2
4    Sonic Burst          4    52.0    4    4.20     2.0   83    83           83    +0
5    Miss Marguerite      5    55.5    5    4.60     0.0   96    94           94    -2
6    She's My Captain     3    52.5    6    6.85     1.5   75    85           85    +10
7    Queen Of Sparta      2    52.5    7    6.90     0.5   87    87           87    +0
8    Spywing              2    52.0    8    99.99    0.5   85    86           86    +1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Kwinta's Light 105 109 101 +8 1.5 -
2 Body Electric Line 86 85 86 -1 0.5
3 Gimme's Lassie 104 101 102 -1 0.0 -
4 Sonic Burst 83 81 83 -2 2.0 -
5 Miss Marguerite 96 91 94 -3 0.0 -
6 She's My Captain 75 77 85 -8 1.5 -
7 Queen Of Sparta 87 87 87 ✓ Match 0.5 -
8 Spywing 85 85 86 -1 0.5 -
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