Official NHA Assessment

Race 2: RACING240 FOR RACING. FOR YOU MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Mercurial Jet
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
6 / 11
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    Moraine              2    56.0    1    0.00     0.0   -     51           6     +6
2    Mercurial Jet        3    60.0    2    3.75     1.0   58    58           58    +0
3    Ballycotton          2    56.5    3    4.75     0.0   -     52           52    +52
4    Act Of Mercy         2    56.0    4    8.00     0.0   -     51           51    +51
5    Pocketfullofstars    4    58.5    5    13.50    0.5   45    55           55    +10
6    Plum Volante         4    60.0    6    13.55    0.5   40    58           58    +18
7    Rock The Boat        3    60.0    7    15.00    1.0   -     57           57    +57
8    Ideal Future         6    60.0    8    16.25    0.0   -     59           59    +59
9    Girl Scout           3    60.0    9    16.50    1.0   51    57           57    +6
99   Sassy                2    56.0    99   0.00     0.0   -     51           51    +0
99   Mayenne              3    60.0    99   0.00     1.0   -     57           57    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Moraine - 87 6 +81 0.0 -
2 Mercurial Jet Line 58 59 58 +1 1.0
3 Ballycotton - 53 52 +1 0.0 -
4 Act Of Mercy - 58 51 +7 0.0 -
5 Pocketfullofstars 45 38 55 -17 0.5 -
6 Plum Volante 40 44 58 -14 0.5 -
7 Rock The Boat - 45 57 -12 1.0 -
8 Ideal Future - 72 59 +13 0.0 -
9 Girl Scout 51 54 57 -3 1.0 -
99 Sassy - 55 51 +4 0.0 -
99 Mayenne - 61 57 +4 1.0 -
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