Official NHA Assessment

Race 1: DOWNLOAD THE RACE CARD ONLINE www.goldcircle.co.za MAIDEN PLATE (For all Maidens)

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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    Seattle Ripper       2    57.0    1    0.00     0.5   -     -            -     +0
2    Plinian              2    57.0    2    0.90     0.5   -     -            -     +0
3    Helsinki             2    57.0    3    1.40     0.5   -     -            -     +0
4    Champonelle          4    55.5    4    2.10     2.0   -     -            -     +0
5    Ment To Fly          2    57.0    5    2.50     0.5   -     -            -     +0
6    Benni In The Area    3    60.0    6    3.90     1.5   74    -            69    -5
7    Bomber Stream        4    57.0    7    4.80     2.0   -     -            -     +0
8    General Byng         2    57.0    8    5.50     0.5   -     -            -     +0
9    Attaboy              2    57.0    9    6.90     0.5   -     -            -     +0
10   Hat Scorpio          2    57.0    10   15.70    0.5   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Seattle Ripper - 59 - +59 0.5 -
2 Plinian - 75 - +75 0.5 -
3 Helsinki - 72 - +72 0.5 -
4 Champonelle - 87 - +87 2.0 -
5 Ment To Fly - 73 - +73 0.5 -
6 Benni In The Area 74 78 69 +9 1.5 -
7 Bomber Stream - 52 - +52 2.0 -
8 General Byng - 75 - +75 0.5 -
9 Attaboy - 65 - +65 0.5 -
10 Hat Scorpio - - - ✓ Match 0.5 -
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