Official NHA Assessment

Race 1: 4RACING WELCOMES YOU MAIDEN PLATE (For all Maidens)

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Line Horse
Main Mission
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
7 / 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    Nuclear Force        5    57.0    1    0.00     0.0   67    70           70    +3
2    Main Mission         2    57.0    2    0.80     0.0   75    75           75    +0
3    Queen Britanna       2    53.5    3    1.10     0.0   67    68           68    +1
4    Time To Meditate     2    54.5    4    2.40     0.0   66    69           69    +3
5    Trois Trois Quatre   5    57.0    5    2.60     0.0   77    74           74    -3
6    Street's Ahead       2    53.5    6    15.00    0.0   58    63           63    +5
7    Big Dreamer          2    57.0    7    25.00    0.0   52    70           70    +18
99   Royal Raphael        3    57.0    99   0.00     8.0   -     54           54    +0
99   Big Five             3    60.0    99   0.00     8.0   -     60           60    +0
99   Greenbackcurrency    3    57.0    99   0.00     8.0   -     54           54    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Nuclear Force 67 61 70 -9 0.0 -
2 Main Mission Line 75 71 75 -4 0.0
3 Queen Britanna 67 57 68 -11 0.0 -
4 Time To Meditate 66 66 69 -3 0.0 -
5 Trois Trois Quatre 77 87 74 +13 0.0 -
6 Street's Ahead 58 55 63 -8 0.0 -
7 Big Dreamer 52 52 70 -18 0.0 -
99 Royal Raphael - 54 54 ✓ Match 8.0 -
99 Big Five - 53 60 -7 8.0 -
99 Greenbackcurrency - 71 54 +17 8.0 -
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