Official NHA Assessment

Race 8: WORLD SPORTS BETTING CLASSIFIED STAKES (For horses with nett rating of 78 and below)

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Line Horse
Chilly Winter
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
3 / 10
Within 2 points
Significant Diffs
4 / 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    Tchaikovsky          6    60.0    1    0.00     0.0   79    80           80    +1
2    Chilly Winter        5    56.5    2    1.25     0.0   73    73           73    +0
3    Alpine Challenge     2    58.0    3    1.75     1.0   90    74           80    -10
4    Wordsworth           7    54.0    4    1.80     0.0   66    68           68    +2
5    Baltimore Jack       5    58.0    5    1.85     0.0   74    76           76    +2
6    Swift Action         3    56.0    6    2.60     2.0   69    68           68    -1
7    Legitimise           4    56.0    7    2.90     2.5   70    67           67    -3
8    Bluff On Bluff       3    60.0    8    3.30     2.0   78    76           76    -2
9    Bonanza              3    60.0    9    4.55     2.0   80    76           76    -4
10   Silver Salmon        3    60.0    10   7.30     2.0   79    76           76    -3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Tchaikovsky 79 81 80 +1 0.0 -
2 Chilly Winter Line 73 73 73 ✓ Match 0.0
3 Alpine Challenge 90 90 80 +10 1.0 -
4 Wordsworth 66 65 68 -3 0.0 -
5 Baltimore Jack 74 72 76 -4 0.0 -
6 Swift Action 69 77 68 +9 2.0 -
7 Legitimise 70 66 67 -1 2.5 -
8 Bluff On Bluff 78 80 76 +4 2.0 -
9 Bonanza 80 57 76 -19 2.0 -
10 Silver Salmon 79 65 76 -11 2.0 -
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