Official NHA Assessment

Race 4: J LESLIE SMITH & COMPANY INC. FM 67 HANDICAP (F & M) (For Fillies and Mares)

Back to Race
Line Horse
Big Sky Country
Reference for assessment
Exact Matches
0 / 15
Calculated = Official
Close Matches
2 / 15
Within 2 points
Significant Diffs
10 / 15
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Diamond Girl         4    58.0    1    0.00     4.0   63    63           63    +0
2    Big Sky Country      4    60.0    2    0.50     4.0   67    67           67    +0
3    Casa Rosada          4    51.0    3    0.70     4.0   57    49           49    -8
4    Flying The Star      4    59.5    4    0.75     4.0   69    66           66    -3
5    Yata                 3    58.5    5    1.35     3.5   72    65           65    -7
6    Shaken Not Stirred   4    50.5    6    1.60     4.0   56    48           48    -8
7    Sabrina Fairchild    4    58.0    7    1.70     4.0   63    63           63    +0
8    Queen Mercury        4    58.0    8    1.95     4.0   63    63           63    +0
9    Birdwatcher          5    60.0    9    2.25     0.0   67    75           75    +8
10   My Elouise           3    57.5    10   2.40     3.5   67    63           63    -4
11   Gimme A Lullaby      3    57.0    11   3.15     3.5   66    62           62    -4
12   Arianos Spinner      5    54.5    12   3.35     0.0   56    64           64    +8
13   Family Favourite     3    59.0    13   4.05     3.5   70    66           66    -4
14   New Orleans          3    55.5    14   5.75     3.5   66    59           59    -7
15   Airbuzz              4    58.0    15   8.55     4.0   63    63           63    +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Diamond Girl 63 74 63 +11 4.0 -
2 Big Sky Country Line 67 51 67 -16 4.0
3 Casa Rosada 57 57 49 +8 4.0 -
4 Flying The Star 69 67 66 +1 4.0 -
5 Yata 72 55 65 -10 3.5 -
6 Shaken Not Stirred 56 55 48 +7 4.0 -
7 Sabrina Fairchild 63 60 63 -3 4.0 -
8 Queen Mercury 63 56 63 -7 4.0 -
9 Birdwatcher 67 53 75 -22 0.0 -
10 My Elouise 67 57 63 -6 3.5 -
11 Gimme A Lullaby 66 59 62 -3 3.5 -
12 Arianos Spinner 56 51 64 -13 0.0 -
13 Family Favourite 70 69 66 +3 3.5 -
14 New Orleans 66 61 59 +2 3.5 -
15 Airbuzz 63 55 63 -8 4.0 -
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