Official NHA Assessment

Race 7: RACEHORSE OWNERS ASSOCIATION MR 97 DIVIDED HANDICAP (Open)

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Line Horse
Raffles
Reference for assessment
Exact Matches
0 / 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    Viva Brazil          3    53.0    1    0.00     4.5   92    74           92    +0
2    Raffles              2    60.5    2    0.05     0.0   98    98           98    +0
3    Poorlittlerichgirl   3    53.5    3    0.10     4.5   84    75           75    -9
4    Willow's Wish        4    58.5    4    2.75     2.0   94    93           93    -1
5    Total Surrender      5    53.0    5    3.65     0.0   83    86           86    +3
6    Trois Trois Quatre   5    55.5    6    4.25     0.0   88    90           90    +2
7    Battleground         5    54.0    7    5.25     0.0   85    85           85    +0
8    Kwazzi's Lady        4    53.5    8    8.25     2.0   84    80           80    -4
9    Home Of The Brave    2    57.5    9    11.00    0.0   92    92           92    +0
10   River Romeo          2    58.0    10   99.99    0.0   101   93           93    -8
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Viva Brazil 92 94 92 +2 4.5 -
2 Raffles Line 98 105 98 +7 0.0
3 Poorlittlerichgirl 84 84 75 +9 4.5 -
4 Willow's Wish 94 96 93 +3 2.0 -
5 Total Surrender 83 74 86 -12 0.0 -
6 Trois Trois Quatre 88 87 90 -3 0.0 -
7 Battleground 85 92 85 +7 0.0 -
8 Kwazzi's Lady 84 82 80 +2 2.0 -
9 Home Of The Brave 92 97 92 +5 0.0 -
10 River Romeo 101 94 93 +1 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