Official NHA Assessment

Race 1: RACE COAST MAIDEN JUVENILE PLATE (Fillies) (For 2 yof R100 000 Win CRS Bonus Series)

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Line Horse
None identified
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
9 / 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    Opera Fan            2    60.0    1    0.00     0.0   -     -            -     +0
2    Cassandra            2    60.0    2    0.25     0.0   -     -            -     +0
3    Harpa                2    60.0    3    5.15     0.0   -     -            -     +0
4    She's A Trackstar    2    60.0    4    5.85     0.0   -     -            -     +0
5    Gathering Winter     2    60.0    5    6.85     0.0   -     -            -     +0
6    Invictus Jet         2    56.0    6    9.15     0.0   -     -            -     +0
7    World Chorus         2    60.0    7    15.05    0.0   -     -            -     +0
8    American Socialite   2    56.0    8    16.25    0.0   -     -            -     +0
9    Omnia                2    60.0    9    17.75    0.0   -     -            -     +0
99   Gimmeanotherviking   2    60.0    99   0.00     0.0   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Opera Fan - 81 - +81 0.0 -
2 Cassandra - 78 - +78 0.0 -
3 Harpa - 74 - +74 0.0 -
4 She's A Trackstar - 59 - +59 0.0 -
5 Gathering Winter - 68 - +68 0.0 -
6 Invictus Jet - 68 - +68 0.0 -
7 World Chorus - 56 - +56 0.0 -
8 American Socialite - 52 - +52 0.0 -
9 Omnia - 70 - +70 0.0 -
99 Gimmeanotherviking - 83 - - 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