Official NHA Assessment

Race 6: IN THE BOX SEAT PODCAST C STAKES (For All Horses)

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Line Horse
Rock Music
Reference for assessment
Exact Matches
2 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
4 / 9
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    Mighty Zambezi       2    60.0    1    0.00     2.0   80    89           86    +6
2    Rock Music           2    53.0    2    3.20     2.0   75    75           75    +0
3    Axis Power           3    53.0    3    3.45     3.0   68    73           73    +5
4    Caribbean Gold       3    59.0    4    6.25     3.0   82    85           85    +3
5    Barry Du Grond       3    55.5    5    10.55    3.0   67    78           78    +11
99   Cowboy Country       2    61.5    99   0.00     2.0   -     92           92    +0
99   Fleur De Ling        4    54.5    99   0.00     3.5   -     75           75    +0
99   Intrepid             3    58.5    99   0.00     3.0   -     84           84    +0
99   Cavalry Commander    3    60.0    99   0.00     3.0   -     87           87    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Mighty Zambezi 80 86 86 ✓ Match 2.0 -
2 Rock Music Line 75 75 75 ✓ Match 2.0
3 Axis Power 68 68 73 -5 3.0 -
4 Caribbean Gold 82 82 85 -3 3.0 -
5 Barry Du Grond 67 65 78 -13 3.0 -
99 Cowboy Country - 84 92 -8 2.0 -
99 Fleur De Ling - 72 75 -3 3.5 -
99 Intrepid - 73 84 -11 3.0 -
99 Cavalry Commander - 76 87 -11 3.0 -
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