Official NHA Assessment

Race 5: BOOK A TABLE CALL 0116811796 NOVICE HANDICAP (Maidens & 1 time winners)

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Line Horse
Black Lightning
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
7 / 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    Napoleon             3    56.0    1    0.00     9.0   70    49           70    +0
2    Black Lightning      2    54.0    2    1.00     0.0   67    67           67    +0
3    American Biscuit     3    60.0    3    1.10     9.0   79    61           69    -10
4    Godfather            2    55.0    4    3.50     0.0   69    66           66    -3
5    Thambi               5    55.5    5    4.50     0.0   70    66           66    -4
6    Silver Sanctuary     4    55.5    6    4.75     7.0   87    52           77    -10
7    King's Express       3    57.5    7    6.25     9.0   74    52           64    -10
8    Prince Of Kildare    4    54.0    8    9.75     7.0   84    49           74    -10
9    Lizado               3    52.0    9    11.00    9.0   44    41           41    -3
99   Mo The Man           3    59.0    99   0.00     9.0   -     55           55    +0
99   Primrose Path        2    56.0    99   0.00     0.0   -     67           67    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Napoleon 70 72 70 +2 9.0 -
2 Black Lightning Line 67 64 67 -3 0.0
3 American Biscuit 79 65 69 -4 9.0 -
4 Godfather 69 57 66 -9 0.0 -
5 Thambi 70 55 66 -11 0.0 -
6 Silver Sanctuary 87 117 77 +40 7.0 -
7 King's Express 74 102 64 +38 9.0 -
8 Prince Of Kildare 84 80 74 +6 7.0 -
9 Lizado 44 42 41 +1 9.0 -
99 Mo The Man - 83 55 +28 9.0 -
99 Primrose Path - 77 67 +10 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