Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY RACING MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Miss United States
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
6 / 10
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    Quick Count          3    60.0    1    0.00     5.0   65    58           58    -7
2    Fly By               3    60.0    2    1.25     5.0   50    58           58    +8
3    Social Spirit        3    60.0    3    2.50     5.0   61    58           58    -3
4    Miss United States   3    60.0    4    2.55     5.0   58    58           58    +0
5    Romanoff             3    60.0    5    2.60     5.0   61    58           58    -3
6    Passion Fantacy      3    60.0    6    2.70     5.0   62    58           58    -4
7    Mezzyoona            4    56.0    7    4.95     6.0   40    48           48    +8
8    Libertarian          4    60.0    8    10.20    6.0   -     56           56    +56
9    Taste Maker          3    60.0    9    12.70    5.0   63    58           58    -5
10   Chinny Rose          3    60.0    10   14.45    5.0   48    58           58    +10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Quick Count 65 69 58 +11 5.0 -
2 Fly By 50 58 58 ✓ Match 5.0 -
3 Social Spirit 61 52 58 -6 5.0 -
4 Miss United States Line 58 52 58 -6 5.0
5 Romanoff 61 54 58 -4 5.0 -
6 Passion Fantacy 62 56 58 -2 5.0 -
7 Mezzyoona 40 39 48 -9 6.0 -
8 Libertarian - 27 56 -29 6.0 -
9 Taste Maker 63 54 58 -4 5.0 -
10 Chinny Rose 48 37 58 -21 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