Official NHA Assessment

Race 2: BET WITH TOTE MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Peace Rose
Reference for assessment
Exact Matches
1 / 7
Calculated = Official
Close Matches
1 / 7
Within 2 points
Significant Diffs
5 / 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    Emerald Forge        2    60.0    1    0.00     2.0   72    77           77    +5
2    Tipperary            3    58.5    2    2.50     3.0   62    72           72    +10
3    Peace Rose           2    60.0    3    2.60     2.0   77    77           77    +0
4    Peach Melba          3    58.5    4    2.80     3.0   78    72           72    -6
5    California Dreamer   3    60.0    5    5.50     3.0   -     75           75    +75
6    Roy's Blossom        4    60.0    6    5.80     3.5   54    74           74    +20
7    Bailey Rose          3    60.0    7    8.60     3.0   34    75           75    +41
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Emerald Forge 72 72 77 -5 2.0 -
2 Tipperary 62 62 72 -10 3.0 -
3 Peace Rose Line 77 77 77 ✓ Match 2.0
4 Peach Melba 78 78 72 +6 3.0 -
5 California Dreamer - - 75 -75 3.0 -
6 Roy's Blossom 54 54 74 -20 3.5 -
7 Bailey Rose 34 34 75 -41 3.0 -
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