Official NHA Assessment

Race 1: www.sajockeyacademy.com QUALIFIED MAIDEN PLATE (Maidens with 3 runs or more & gross rating of 68 or less)

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Line Horse
Saka Gold
Reference for assessment
Exact Matches
1 / 7
Calculated = Official
Close Matches
3 / 7
Within 2 points
Significant Diffs
3 / 7
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    Don't Linngar        3    60.0    1    0.00     7.5   57    61           61    +4
2    Saka Gold            3    60.0    2    2.50     7.5   61    61           61    +0
3    Truly Brave          2    55.0    3    5.50     5.0   54    56           56    +2
4    Brainwave            2    59.0    4    6.80     5.0   58    64           64    +6
5    Raptor Island        2    59.0    5    6.85     5.0   62    64           64    +2
6    Fly Away Robyn       3    57.5    6    12.15    7.5   51    56           56    +5
7    Creator              3    60.0    7    13.25    7.5   53    61           61    +8
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Don't Linngar 57 62 61 +1 7.5 -
2 Saka Gold Line 61 60 61 -1 7.5
3 Truly Brave 54 56 56 ✓ Match 5.0 -
4 Brainwave 58 58 64 -6 5.0 -
5 Raptor Island 62 61 64 -3 5.0 -
6 Fly Away Robyn 51 48 56 -8 7.5 -
7 Creator 53 46 61 -15 7.5 -
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