Official NHA Assessment

Race 9: WSB WISHES ALL STAKE HOLDERS A MERRY CHRISTMAS FM 72 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Run For Isla
Reference for assessment
Exact Matches
1 / 16
Calculated = Official
Close Matches
2 / 16
Within 2 points
Significant Diffs
10 / 16
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    Stormy Choice        4    59.0    1    0.00     3.0   80    71           80    +0
2    Boom Boom            4    59.0    2    1.75     3.0   80    74           74    -6
3    Run For Isla         3    54.5    3    2.25     5.0   61    61           61    +0
4    Rose Tinted          2    59.5    4    2.30     0.0   81    80           80    -1
5    Bad Hair Day         2    52.0    5    3.50     0.0   52    64           64    +12
6    Count Your Chances   5    54.5    6    3.75     0.0   61    69           69    +8
7    Lady Elliot          2    61.0    7    4.00     0.0   84    82           82    -2
8    Miss Soho            2    59.0    8    5.75     0.0   73    77           77    +4
9    Summer Of Dreams     2    58.0    9    6.75     0.0   68    75           75    +7
10   Golden Aspen         6    60.5    10   11.00    0.0   73    80           80    +7
11   Striking Angel       2    58.5    11   11.75    0.0   79    76           76    -3
12   Beguiling            3    52.0    12   13.50    5.0   55    53           53    -2
13   Kill Shot            2    55.0    13   15.50    0.0   70    69           69    -1
14   Godspeed             2    59.5    14   15.55    0.0   84    78           78    -6
15   Splendid Season      2    48.0    15   22.50    0.0   52    55           55    +3
99   Blue Waters          2    48.0    99   0.00     0.0   -     55           55    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Stormy Choice 80 81 80 +1 3.0 -
2 Boom Boom 80 81 74 +7 3.0 -
3 Run For Isla Line 61 58 61 -3 5.0
4 Rose Tinted 81 80 80 ✓ Match 0.0 -
5 Bad Hair Day 52 47 64 -17 0.0 -
6 Count Your Chances 61 51 69 -18 0.0 -
7 Lady Elliot 84 71 82 -11 0.0 -
8 Miss Soho 73 73 77 -4 0.0 -
9 Summer Of Dreams 68 65 75 -10 0.0 -
10 Golden Aspen 73 66 80 -14 0.0 -
11 Striking Angel 79 68 76 -8 0.0 -
12 Beguiling 55 50 53 -3 5.0 -
13 Kill Shot 70 54 69 -15 0.0 -
14 Godspeed 84 60 78 -18 0.0 -
15 Splendid Season 52 50 55 -5 0.0 -
99 Blue Waters - 61 55 +6 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