Official NHA Assessment

Race 1: #THISISRACING WELCOMES YOU 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 / 10
Calculated = Official
Close Matches
1 / 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    United Express       2    60.0    1    0.00     1.5   -     -            -     +0
2    Querulous            2    60.0    2    0.20     1.5   -     -            -     +0
3    Silver Clock         2    60.0    3    0.40     1.5   -     -            -     +0
4    Orarari Gold         2    60.0    4    0.60     1.5   -     -            -     +0
5    Second Breath        2    60.0    5    0.90     1.5   -     -            -     +0
6    Gimme The Flame      5    60.0    6    1.10     0.0   -     -            -     +0
7    Kitty Corner         2    60.0    7    3.30     1.5   -     -            -     +0
8    Covert Action        2    60.0    8    5.25     1.5   -     -            -     +0
9    Voshaarnooi          2    60.0    9    9.25     1.5   -     -            -     +0
10   Rebels Cookie        2    60.0    10   22.00    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 United Express - 74 - +74 1.5 -
2 Querulous - 73 - +73 1.5 -
3 Silver Clock - 67 - +67 1.5 -
4 Orarari Gold - 101 - +101 1.5 -
5 Second Breath - 79 - +79 1.5 -
6 Gimme The Flame - 50 - +50 0.0 -
7 Kitty Corner - 60 - +60 1.5 -
8 Covert Action - 58 - +58 1.5 -
9 Voshaarnooi - 50 - +50 1.5 -
10 Rebels Cookie - - - ✓ 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