Official NHA Assessment

Race 3: SLEDGEHAMMER MAIDEN PLATE (For all Maidens)

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Line Horse
Axel Collins
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
7 / 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    Izuizorizuaint       2    60.0    1    0.00     3.5   67    65           65    -2
2    Super Fast           5    60.0    2    0.20     0.0   -     72           72    +72
3    Axel Collins         5    60.0    3    2.60     0.0   72    72           72    +0
4    Twice The Trinity    3    60.0    4    2.85     5.0   -     62           62    +62
5    Rare Flag            3    60.0    5    3.10     5.0   60    62           62    +2
6    Sirnihaallongsword   4    60.0    6    5.30     6.0   56    60           60    +4
7    Truly Brave          2    57.5    7    9.30     3.5   56    60           60    +4
8    Ice Angel            4    56.0    8    99.99    6.0   56    52           52    -4
9    Gold Ensign          5    60.0    9    99.99    0.0   -     72           72    +72
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Izuizorizuaint 67 56 65 -9 3.5 -
2 Super Fast - 83 72 +11 0.0 -
3 Axel Collins Line 72 55 72 -17 0.0
4 Twice The Trinity - 72 62 +10 5.0 -
5 Rare Flag 60 54 62 -8 5.0 -
6 Sirnihaallongsword 56 69 60 +9 6.0 -
7 Truly Brave 56 56 60 -4 3.5 -
8 Ice Angel 56 56 52 +4 6.0 -
9 Gold Ensign - 64 72 -8 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