Official NHA Assessment

Race 6: RACEHORSE OWNERS ASSOCIATION MR 80 HANDICAP (Open)

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Line Horse
Copper Mist
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
5 / 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    Two Miles West       3    60.0    1    0.00     1.5   83    77           83    +0
2    American Biscuit     3    55.0    2    1.70     1.5   70    70           70    +0
3    Copper Mist          2    59.5    3    1.80     0.0   82    82           82    +0
4    Captain Of Grit      3    59.0    4    3.00     1.5   86    77           77    -9
5    Safe Space           5    54.5    5    4.00     0.0   69    70           70    +1
6    Blackberry Breeze    4    59.0    6    5.25     0.5   81    77           77    -4
7    Houston              3    56.5    7    8.50     1.5   73    70           70    -3
8    Trippis Tune         3    57.0    8    22.00    1.5   77    71           71    -6
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Two Miles West 83 93 83 +10 1.5 -
2 American Biscuit 70 65 70 -5 1.5 -
3 Copper Mist Line 82 62 82 -20 0.0
4 Captain Of Grit 86 84 77 +7 1.5 -
5 Safe Space 69 83 70 +13 0.0 -
6 Blackberry Breeze 81 71 77 -6 0.5 -
7 Houston 73 69 70 -1 1.5 -
8 Trippis Tune 77 70 71 -1 1.5 -
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