Official NHA Assessment

Race 3: MARSHALLS WORLD OF SPORT MAIDEN PLATE (F & M) (For Maiden Fillies & Mares)

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Line Horse
Duchess Of Gold
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
2 / 12
Within 2 points
Significant Diffs
9 / 12
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    American Style       3    60.0    1    0.00     9.0   58    53           53    -5
2    Duchess Of Gold      2    57.0    2    2.60     0.0   69    69           69    +0
3    Top Ten              4    56.0    3    3.40     5.0   50    56           56    +6
4    Flirty Dancer        3    57.0    4    3.50     9.0   -     50           50    +50
5    Mythical Tune        3    57.5    5    8.30     9.0   61    48           51    -10
6    Such A Cracker       2    57.0    6    8.50     0.0   72    65           65    -7
7    Critical Thinking    3    60.0    7    20.20    9.0   48    53           53    +5
8    Girls Got Rhythm     3    58.5    8    20.45    9.0   41    50           50    +9
9    Adelante             3    60.0    9    24.35    9.0   63    53           53    -10
10   Roy's Mona           4    60.0    10   99.99    5.0   -     61           61    +61
11   Vreni                4    60.0    11   99.99    5.0   40    61           61    +21
99   Saturn Moon          2    57.0    99   0.00     0.0   -     65           65    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 American Style 58 60 53 +7 9.0 -
2 Duchess Of Gold Line 69 62 69 -7 0.0
3 Top Ten 50 50 56 -6 5.0 -
4 Flirty Dancer - 66 50 +16 9.0 -
5 Mythical Tune 61 50 51 -1 9.0 -
6 Such A Cracker 72 64 65 -1 0.0 -
7 Critical Thinking 48 39 53 -14 9.0 -
8 Girls Got Rhythm 41 39 50 -11 9.0 -
9 Adelante 63 50 53 -3 9.0 -
10 Roy's Mona - 20 61 -41 5.0 -
11 Vreni 40 20 61 -41 5.0 -
99 Saturn Moon - 57 65 -8 0.0 -
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