Official NHA Assessment

Race 6: 4RACING.TV FM 82 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Lady Writer
Reference for assessment
Exact Matches
2 / 9
Calculated = Official
Close Matches
4 / 9
Within 2 points
Significant Diffs
4 / 9
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    Opera Swing          4    56.5    1    0.00     1.0   75    77           75    +0
2    Dame Of Flames       3    58.0    2    0.50     2.0   86    85           85    -1
3    Lady Writer          3    54.5    3    4.75     2.0   71    71           71    +0
4    Chroniclesofnania    5    58.5    4    6.00     0.0   79    83           83    +4
5    Gold For Africa      3    53.5    5    6.50     2.0   69    69           69    +0
6    Crystal Maiden       4    55.5    6    9.25     1.0   77    75           75    -2
7    Raising Quinn        3    55.5    7    10.50    2.0   73    73           73    +0
8    Aerial View          3    60.0    8    12.50    2.0   82    82           82    +0
9    St Cloud             3    55.5    9    25.75    2.0   73    73           73    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Opera Swing 75 82 75 +7 1.0 -
2 Dame Of Flames 86 95 85 +10 2.0 -
3 Lady Writer Line 71 69 71 -2 2.0
4 Chroniclesofnania 79 60 83 -23 0.0 -
5 Gold For Africa 69 68 69 -1 2.0 -
6 Crystal Maiden 77 66 75 -9 1.0 -
7 Raising Quinn 73 69 73 -4 2.0 -
8 Aerial View 82 82 82 ✓ Match 2.0 -
9 St Cloud 73 73 73 ✓ Match 2.0 -
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