Official NHA Assessment

Race 1: #YOUCANBETONUS! MAIDEN PLATE (F & M) (For Maiden Fillies & Mares)

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Line Horse
Plumbago Park
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
7 / 8
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    Russian Nobility     3    60.0    1    0.00     7.5   -     74           6     +6
2    Plumbago Park        2    60.0    2    2.80     5.0   79    79           79    +0
3    Aquarius             3    60.0    3    5.50     7.5   -     74           74    +74
4    Winter Wedding       2    56.0    4    8.20     5.0   66    71           71    +5
5    Sikeloi              3    57.5    5    8.70     7.5   -     69           69    +69
6    Jazz Away            2    60.0    6    10.10    5.0   63    79           79    +16
7    Memphis              2    60.0    7    18.30    5.0   -     79           79    +79
8    Sapphire Storm       2    60.0    8    29.50    5.0   -     79           79    +79
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Russian Nobility - 86 6 +80 7.5 -
2 Plumbago Park Line 79 72 79 -7 5.0
3 Aquarius - 81 74 +7 7.5 -
4 Winter Wedding 66 75 71 +4 5.0 -
5 Sikeloi - 76 69 +7 7.5 -
6 Jazz Away 63 64 79 -15 5.0 -
7 Memphis - 40 79 -39 5.0 -
8 Sapphire Storm - 35 79 -44 5.0 -
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