Official NHA Assessment

Race 7: RACING240 FM 79 APPRENTICE DIVIDED HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Opera Fan
Reference for assessment
Exact Matches
2 / 12
Calculated = Official
Close Matches
4 / 12
Within 2 points
Significant Diffs
1 / 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    Kensal Green         2    55.0    1    0.00     0.0   79    77           79    +0
2    Winds Of Grace       3    56.5    2    2.20     2.5   72    78           78    +6
3    Opera Fan            2    56.0    3    2.40     0.0   81    81           81    +0
4    Eight Hats           2    50.0    4    3.65     0.0   64    68           68    +4
5    Play With Fire       4    57.5    5    3.90     1.0   79    81           81    +2
6    Trip Of Faith        3    56.0    6    4.20     2.5   79    75           75    -4
7    Sister Golden Hair   2    58.5    7    6.90     0.0   81    84           84    +3
8    Kylie's Angel        3    50.5    8    7.30     2.5   60    63           63    +3
9    Way To Burn          3    49.5    9    10.30    2.5   66    61           61    -5
10   Sheets And Goggles   3    52.0    10   11.80    2.5   63    66           66    +3
11   Far Reaching         2    49.5    11   11.90    0.0   63    66           66    +3
99   Northern Kitten      3    52.0    99   0.00     2.5   -     66           66    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Kensal Green 79 79 79 ✓ Match 0.0 -
2 Winds Of Grace 72 72 78 -6 2.5 -
3 Opera Fan Line 81 81 81 ✓ Match 0.0
4 Eight Hats 64 64 68 -4 0.0 -
5 Play With Fire 79 79 81 -2 1.0 -
6 Trip Of Faith 79 79 75 +4 2.5 -
7 Sister Golden Hair 81 81 84 -3 0.0 -
8 Kylie's Angel 60 60 63 -3 2.5 -
9 Way To Burn 66 66 61 +5 2.5 -
10 Sheets And Goggles 63 63 66 -3 2.5 -
11 Far Reaching 63 63 66 -3 0.0 -
99 Northern Kitten - 67 66 +1 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