Official NHA Assessment

Race 5: 4RACING.TV FM 80 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Heartsease
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
6 / 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    Official Secret      6    56.5    1    0.00     0.0   73    83           73    +0
2    Public Benefit       2    57.5    2    1.50     0.0   89    90           90    +1
3    Heartsease           3    55.0    3    2.50     7.0   70    70           70    +0
4    Gold For Africa      3    51.5    4    2.75     7.0   72    62           62    -10
5    Treasure Hunt        6    60.5    5    5.25     0.0   81    91           91    +10
6    Opera Swing          4    58.0    6    5.75     3.5   76    79           79    +3
7    Flame Flower         3    56.5    7    5.80     7.0   81    69           71    -10
8    Keep The Fort        3    55.0    8    7.05     7.0   71    66           66    -5
9    Hey Siri             2    55.5    9    8.05     0.0   72    81           81    +9
10   Respectable Miss     4    52.0    10   9.55     3.5   57    67           67    +10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Official Secret 73 103 73 +30 0.0 -
2 Public Benefit 89 86 90 -4 0.0 -
3 Heartsease Line 70 73 70 +3 7.0
4 Gold For Africa 72 68 62 +6 7.0 -
5 Treasure Hunt 81 80 91 -11 0.0 -
6 Opera Swing 76 82 79 +3 3.5 -
7 Flame Flower 81 78 71 +7 7.0 -
8 Keep The Fort 71 66 66 ✓ Match 7.0 -
9 Hey Siri 72 70 81 -11 0.0 -
10 Respectable Miss 57 50 67 -17 3.5 -
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