Official NHA Assessment

Race 6: RACING240 FM 80 DIVIDED HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Ada Lovelace
Reference for assessment
Exact Matches
4 / 11
Calculated = Official
Close Matches
9 / 11
Within 2 points
Significant Diffs
1 / 11
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    Crystal Grove        2    54.5    1    0.00     1.5   77    72           77    +0
2    Ada Lovelace         2    55.5    2    0.20     1.5   74    74           74    +0
3    Valieva              3    58.0    3    1.40     2.5   76    77           77    +1
4    Fair Proposal        2    60.0    4    1.60     1.5   83    83           83    +0
5    Sigrid Swing         4    58.0    5    2.30     0.0   76    82           82    +6
6    Beautiful Rania      3    54.5    6    2.35     2.5   72    70           70    -2
7    Kylie's Angel        3    50.5    7    2.75     2.5   57    62           62    +5
8    Misty Metal          3    55.5    8    2.85     2.5   71    72           72    +1
9    Clairwood Rose       2    56.0    9    21.25    1.5   75    75           75    +0
10   Opera Fan            2    58.0    10   22.25    1.5   79    79           79    +0
99   Rabble Rouser        3    58.0    99   0.00     2.5   -     77           77    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Crystal Grove 77 79 77 +2 1.5 -
2 Ada Lovelace Line 74 74 74 ✓ Match 1.5
3 Valieva 76 76 77 -1 2.5 -
4 Fair Proposal 83 83 83 ✓ Match 1.5 -
5 Sigrid Swing 76 76 82 -6 0.0 -
6 Beautiful Rania 72 72 70 +2 2.5 -
7 Kylie's Angel 57 57 62 -5 2.5 -
8 Misty Metal 71 71 72 -1 2.5 -
9 Clairwood Rose 75 75 75 ✓ Match 1.5 -
10 Opera Fan 79 79 79 ✓ Match 1.5 -
99 Rabble Rouser - 79 77 +2 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