Official NHA Assessment

Race 2: SF PINE SHAVINGS FM 76 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Morgan La Fay
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
6 / 9
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    Imperious Destiny    3    59.0    1    0.00     0.5   76    72           76    +0
2    Shanta's Pride       3    60.5    2    0.50     0.5   79    80           80    +1
3    Double Dream         3    59.0    3    0.75     0.5   74    76           76    +2
4    Morgan La Fay        2    60.5    4    1.45     0.0   79    79           79    +0
5    Sleek As Silk        2    60.5    5    1.70     0.0   79    79           79    +0
6    Harley's Fate        2    59.0    6    1.95     0.0   76    76           76    +0
7    Time For Glory       2    57.5    7    8.75     0.0   73    70           70    -3
8    Red Roses Too        5    61.0    8    9.45     0.0   80    77           77    -3
9    Imbewu               3    56.5    9    11.25    0.5   72    67           67    -5
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Imperious Destiny 76 85 76 +9 0.5 -
2 Shanta's Pride 79 88 80 +8 0.5 -
3 Double Dream 74 71 76 -5 0.5 -
4 Morgan La Fay Line 79 98 79 +19 0.0
5 Sleek As Silk 79 87 79 +8 0.0 -
6 Harley's Fate 76 67 76 -9 0.0 -
7 Time For Glory 73 77 70 +7 0.0 -
8 Red Roses Too 80 82 77 +5 0.0 -
9 Imbewu 72 72 67 +5 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