Official NHA Assessment

Race 2: RACE COAST WISHES YOU A HAPPY NEW YEAR D STAKES (For All Horses)

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Line Horse
Champagne Mac
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
3 / 8
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    Digby                2    65.0    1    0.00     3.5   73    76           76    +3
2    Whirlwind            3    61.5    2    0.30     5.0   78    66           68    -10
3    Champagne Mac        4    57.0    3    2.30     6.0   55    55           55    +0
4    Caribbean Gold       3    61.5    4    5.30     5.0   78    66           68    -10
5    Country Time         5    56.0    5    5.80     0.0   60    65           65    +5
6    Pushing Limits       3    62.5    6    5.85     5.0   73    68           68    -5
7    Mrs Shackleton       2    46.5    7    7.35     3.5   50    39           40    -10
8    Easy Money           4    59.0    8    8.60     6.0   66    59           59    -7
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Digby 73 77 76 +1 3.5 -
2 Whirlwind 78 87 68 +19 5.0 -
3 Champagne Mac Line 55 55 55 ✓ Match 6.0
4 Caribbean Gold 78 82 68 +14 5.0 -
5 Country Time 60 62 65 -3 0.0 -
6 Pushing Limits 73 73 68 +5 5.0 -
7 Mrs Shackleton 50 50 40 +10 3.5 -
8 Easy Money 66 56 59 -3 6.0 -
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