Official NHA Assessment

Race 8: TOPBET MIDDLE STAKES (For horses with nett rating of 96 and below)

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Line Horse
Stormy Winter
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
7 / 10
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    The Kop              4    58.0    1    0.00     5.0   88    75           75    -13
2    King's Crusade       4    54.5    2    0.50     5.0   80    73           73    -7
3    Stormy Winter        8    60.0    3    0.60     0.0   94    94           94    +0
4    Elusive Swann        4    56.0    4    0.90     5.0   83    75           75    -8
4    Great Affair         7    54.0    4    0.90     0.0   81    81           81    +0
6    Back To Black        4    58.0    6    1.20     5.0   91    79           81    -10
7    Supreme Dance        4    60.0    7    1.60     5.0   96    82           86    -10
8    Run As One           3    58.0    8    9.85     9.0   89    67           79    -10
9    Definitely Maybe     3    55.5    9    12.35    9.0   90    62           80    -10
99   Snow Palace          5    55.5    99   0.00     0.0   -     80           80    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 The Kop 88 78 75 +3 5.0 -
2 King's Crusade 80 81 73 +8 5.0 -
3 Stormy Winter Line 94 69 94 -25 0.0
4 Elusive Swann 83 72 75 -3 5.0 -
4 Great Affair 81 63 81 -18 0.0 -
6 Back To Black 91 89 81 +8 5.0 -
7 Supreme Dance 96 76 86 -10 5.0 -
8 Run As One 89 79 79 ✓ Match 9.0 -
9 Definitely Maybe 90 97 80 +17 9.0 -
99 Snow Palace - 87 80 +7 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