Official NHA Assessment

Race 2: #THISISRACING MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Miss United States
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
4 / 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    European Summer      3    60.0    1    0.00     3.0   56    57           57    +1
2    Rhythm Of The Rain   3    60.0    2    0.50     3.0   76    57           66    -10
3    Lily Of Orange       3    60.0    3    3.00     3.0   63    57           57    -6
4    Miss United States   3    60.0    4    3.25     3.0   57    57           57    +0
5    Rio Supremo          3    60.0    5    5.00     3.0   60    57           57    -3
6    Bold Leah            4    60.0    6    5.10     3.5   51    56           56    +5
7    Miss Rose            3    60.0    7    5.35     3.0   57    57           57    +0
8    Wonder Woman         6    60.0    8    5.40     0.0   49    63           63    +14
9    Siever's Point       3    60.0    9    8.65     3.0   52    57           57    +5
10   Rare                 3    60.0    10   16.40    3.0   60    57           57    -3
99   Magic To The Fore    3    58.5    99   0.00     3.0   -     54           54    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 European Summer 56 77 57 +20 3.0 -
2 Rhythm Of The Rain 76 70 66 +4 3.0 -
3 Lily Of Orange 63 55 57 -2 3.0 -
4 Miss United States Line 57 52 57 -5 3.0
5 Rio Supremo 60 52 57 -5 3.0 -
6 Bold Leah 51 40 56 -16 3.5 -
7 Miss Rose 57 57 57 ✓ Match 3.0 -
8 Wonder Woman 49 43 63 -20 0.0 -
9 Siever's Point 52 49 57 -8 3.0 -
10 Rare 60 53 57 -4 3.0 -
99 Magic To The Fore - 58 54 +4 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