Official NHA Assessment

Race 1: #THISISRACING WELCOMES YOU MAIDEN PLATE (For all Maidens)

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Line Horse
Don't Tell Ash
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
8 / 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    Rule By Force        3    58.0    1    0.00     9.5   -     68           6     +6
2    Fostinovo            3    58.0    2    1.00     9.5   -     68           68    +68
3    Don't Tell Ash       2    55.5    3    2.90     6.5   69    69           69    +0
4    Northern Tune        4    60.0    4    5.90     11.0  57    69           69    +12
5    Red Emperor          3    58.0    5    7.30     9.5   -     68           68    +68
6    Labrausco            2    58.0    6    12.70    6.5   53    74           74    +21
7    Stella Brillante     2    58.0    7    16.80    6.5   69    74           74    +5
8    Once In A Lifetime   4    60.0    8    22.90    11.0  -     69           69    +69
99   Unzen                3    58.0    99   0.00     9.5   -     68           68    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Rule By Force - 117 6 +111 9.5 -
2 Fostinovo - 80 68 +12 9.5 -
3 Don't Tell Ash Line 69 75 69 +6 6.5
4 Northern Tune 57 62 69 -7 11.0 -
5 Red Emperor - 56 68 -12 9.5 -
6 Labrausco 53 70 74 -4 6.5 -
7 Stella Brillante 69 57 74 -17 6.5 -
8 Once In A Lifetime - - 69 -69 11.0 -
99 Unzen - 116 68 +48 9.5 -
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