Official NHA Assessment

Race 2: #ThisIsRacing MAIDEN JUVENILE PLATE (Fillies) (For 2 yof R60 000 Win BSA Bonus Series)

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Line Horse
None identified
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
1 / 11
Within 2 points
Significant Diffs
10 / 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    Star In Winter       2    60.0    1    0.00     1.5   -     -            -     +0
2    Country Time         5    60.0    2    1.25     0.0   -     -            -     +0
3    Palo Queen           5    60.0    3    1.75     0.0   -     -            -     +0
4    White Witch          2    60.0    4    3.75     1.5   -     -            -     +0
5    Silver Screen        2    60.0    5    5.00     1.5   -     -            -     +0
6    Fur Baby             2    60.0    6    5.75     1.5   -     -            -     +0
7    Chroniclesofnania    5    60.0    7    7.75     0.0   -     -            -     +0
8    Amanda Dunes         2    60.0    8    12.00    1.5   -     -            -     +0
9    Trip To Barberton    2    60.0    9    12.50    1.5   -     -            -     +0
10   Dawn Dancer          2    60.0    10   13.75    1.5   -     -            -     +0
11   Midwinter Rose       2    60.0    11   18.00    1.5   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Star In Winter - 72 - +72 1.5 -
2 Country Time - 62 - +62 0.0 -
3 Palo Queen - 70 - +70 0.0 -
4 White Witch - 52 - +52 1.5 -
5 Silver Screen - 70 - +70 1.5 -
6 Fur Baby - 64 - +64 1.5 -
7 Chroniclesofnania - 60 - +60 0.0 -
8 Amanda Dunes - 50 - +50 1.5 -
9 Trip To Barberton - 64 - +64 1.5 -
10 Dawn Dancer - 50 - +50 1.5 -
11 Midwinter Rose - - - ✓ Match 1.5 -
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