Official NHA Assessment

Race 2: BET WITH TOTE MAIDEN PLATE (For all Maidens)

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Line Horse
Owner Of Creation
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
3 / 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    Prins Jaspar         2    60.0    1    0.00     0.0   75    64           64    -11
2    Owner Of Creation    3    60.0    2    3.00     1.5   63    63           63    +0
3    Diamond Maker        4    60.0    3    5.00     0.5   -     63           63    +63
4    Sail The Horizon     3    60.0    4    7.60     1.5   72    61           62    -10
5    Winter Circle        2    56.0    5    13.00    0.0   -     56           56    +56
6    Roy's Glorious       4    58.5    6    17.20    0.5   64    60           60    -4
7    War Machine          2    56.0    7    27.20    0.0   -     56           56    +56
8    Billy Lover Boy      2    56.0    8    99.99    0.0   -     56           56    +56
99   Full Monty           3    60.0    99   0.00     1.5   -     61           61    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Prins Jaspar 75 75 64 +11 0.0 -
2 Owner Of Creation Line 63 63 63 ✓ Match 1.5
3 Diamond Maker - 59 63 -4 0.5 -
4 Sail The Horizon 72 69 62 +7 1.5 -
5 Winter Circle - - 56 - 0.0 -
6 Roy's Glorious 64 64 60 +4 0.5 -
7 War Machine - - 56 - 0.0 -
8 Billy Lover Boy - - 56 - 0.0 -
99 Full Monty - 70 61 +9 1.5 -
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