Official NHA Assessment

Race 3: RACING TODAY MAIDEN PLATE (For all Maidens)

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Line Horse
Mrs Stormiatrix
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
1 / 7
Within 2 points
Significant Diffs
6 / 7
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    King Redoute         3    60.0    1    0.00     4.5   -     77           6     +6
2    Mrs Stormiatrix      2    57.5    2    1.90     3.0   75    75           75    +0
3    Kambati              4    58.5    3    4.10     5.0   62    73           73    +11
4    Jawbreaker           3    60.0    4    7.20     4.5   50    77           77    +27
5    Olympic Admiral      3    56.0    5    10.20    4.5   50    69           69    +19
6    Power Of Tiger       3    57.5    6    10.50    4.5   66    72           72    +6
99   Bella Boop Boop      3    57.5    99   0.00     4.5   -     72           72    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 King Redoute - 80 6 +74 4.5 -
2 Mrs Stormiatrix Line 75 81 75 +6 3.0
3 Kambati 62 75 73 +2 5.0 -
4 Jawbreaker 50 62 77 -15 4.5 -
5 Olympic Admiral 50 56 69 -13 4.5 -
6 Power Of Tiger 66 61 72 -11 4.5 -
99 Bella Boop Boop - 58 72 -14 4.5 -
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