Official NHA Assessment

Race 9: ADVENTURE SPORTS EXCHANGE CLASS 4 (Open. Benchmark at 60.0kg = 82)

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Line Horse
Jazz Festival
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
6 / 11
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    Kanaal Skater        2    54.0    1    0.00     0.0   86    65           65    -21
2    Jazz Festival        5    55.5    2    0.60     0.0   73    73           73    +0
3    Attaboy              2    52.0    3    0.90     0.0   60    65           65    +5
4    Turbo Twenty         2    54.5    4    1.00     0.0   80    70           70    -10
5    Buddy Boy            3    56.0    5    2.00     8.0   90    56           80    -10
6    Banha Bridge         5    57.0    6    3.60     0.0   76    72           72    -4
7    World Of Our Own     3    58.5    7    4.30     8.0   83    58           73    -10
8    Meerkat Moon         2    58.0    8    7.00     0.0   79    73           73    -6
9    Cold Shine           2    57.0    9    21.20    0.0   77    71           71    -6
99   Magma Magic          4    56.0    99   0.00     5.0   -     59           59    +0
99   Mohave Prince        2    55.0    99   0.00     0.0   -     67           67    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Kanaal Skater 86 93 65 +28 0.0 -
2 Jazz Festival Line 73 70 73 -3 0.0
3 Attaboy 60 65 65 ✓ Match 0.0 -
4 Turbo Twenty 80 80 70 +10 0.0 -
5 Buddy Boy 90 85 80 +5 8.0 -
6 Banha Bridge 76 70 72 -2 0.0 -
7 World Of Our Own 83 87 73 +14 8.0 -
8 Meerkat Moon 79 70 73 -3 0.0 -
9 Cold Shine 77 77 71 +6 0.0 -
99 Magma Magic - 81 59 +22 5.0 -
99 Mohave Prince - 92 67 +25 0.0 -
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