Official NHA Assessment

Race 5: FOR HOSPITALITY BOOKINGS CALL 011 681 1796 MR 80 HANDICAP (Open)

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Line Horse
Secret Chord
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
1 / 7
Within 2 points
Significant Diffs
5 / 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    Longsword            2    60.5    1    0.00     3.5   81    86           81    +0
2    Vibe Sa              2    61.5    2    0.80     3.5   83    88           88    +5
3    Secret Chord         4    61.5    3    1.30     6.0   83    83           83    +0
4    Sea Wolf             3    59.0    4    1.40     5.0   85    80           80    -5
5    Kinshin Sha          4    60.0    5    2.10     6.0   80    80           80    +0
6    Vegas Hi Rise        6    59.0    6    3.10     0.0   78    90           90    +12
7    Clarkson             4    57.0    7    4.60     6.0   74    74           74    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Longsword 81 72 81 -9 3.5 -
2 Vibe Sa 83 92 88 +4 3.5 -
3 Secret Chord Line 83 92 83 +9 6.0
4 Sea Wolf 85 87 80 +7 5.0 -
5 Kinshin Sha 80 62 80 -18 6.0 -
6 Vegas Hi Rise 78 71 90 -19 0.0 -
7 Clarkson 74 75 74 +1 6.0 -
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