Official NHA Assessment

Race 7: BOOK FOR CLASSIC DAY 1 MARCH MR 97 HANDICAP (For 3 year olds)

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Line Horse
Two Miles West
Reference for assessment
Exact Matches
1 / 12
Calculated = Official
Close Matches
2 / 12
Within 2 points
Significant Diffs
5 / 12
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    King's Express       3    56.5    1    0.00     5.0   90    86           90    +0
2    Champagne Cocktail   4    60.0    2    0.25     2.5   97    98           98    +1
3    Apache Son           4    55.5    3    0.50     2.5   88    94           94    +6
4    Two Miles West       3    56.5    4    0.75     5.0   90    90           90    +0
5    Total Surrender      5    55.5    5    1.50     0.0   87    97           97    +10
6    Mount Darwin         3    56.0    6    1.75     5.0   89    88           88    -1
7    Star Coin            5    59.5    7    2.25     0.0   96    105          105   +9
8    Royal Edition        4    56.5    8    3.05     2.5   90    93           93    +3
9    La Moohal            4    59.5    9    4.35     2.5   96    97           97    +1
10   Flashy Apache        6    59.0    10   5.05     0.0   95    101          101   +6
11   George Handel        4    51.0    11   9.05     2.5   87    80           80    -7
12   Twin Turbo           4    56.5    12   19.25    2.5   90    91           91    +1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 King's Express 90 102 90 +12 5.0 -
2 Champagne Cocktail 97 98 98 ✓ Match 2.5 -
3 Apache Son 88 89 94 -5 2.5 -
4 Two Miles West Line 90 93 90 +3 5.0
5 Total Surrender 87 74 97 -23 0.0 -
6 Mount Darwin 89 81 88 -7 5.0 -
7 Star Coin 96 78 105 -27 0.0 -
8 Royal Edition 90 92 93 -1 2.5 -
9 La Moohal 96 93 97 -4 2.5 -
10 Flashy Apache 95 78 101 -23 0.0 -
11 George Handel 87 85 80 +5 2.5 -
12 Twin Turbo 90 88 91 -3 2.5 -
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