Official NHA Assessment

Race 4: RACING240 FOR RACING. FOR YOU MR 80 HANDICAP (Open)

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Line Horse
Swiss Walt
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
4 / 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    Eyjafjallajokull     2    62.0    1    0.00     5.0   84    92           84    +0
2    Cool Cat             2    59.0    2    0.75     5.0   88    86           86    -2
3    Swiss Walt           4    54.5    3    1.00     9.0   69    69           69    +0
4    My Ami Beach         6    57.5    4    2.25     0.0   75    93           93    +18
5    Arturo               2    56.5    5    4.50     5.0   73    81           81    +8
6    Great Melody         3    60.0    6    4.75     7.5   80    83           83    +3
7    Aadehya              4    60.5    7    5.00     9.0   81    81           81    +0
8    Graduation Time      4    56.5    8    6.75     9.0   73    73           73    +0
9    Marquez              3    55.0    9    20.50    7.5   69    73           73    +4
99   Knockemstiff         2    53.0    99   0.00     5.0   -     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 Eyjafjallajokull 84 86 84 +2 5.0 -
2 Cool Cat 88 94 86 +8 5.0 -
3 Swiss Walt Line 69 74 69 +5 9.0
4 My Ami Beach 75 70 93 -23 0.0 -
5 Arturo 73 76 81 -5 5.0 -
6 Great Melody 80 79 83 -4 7.5 -
7 Aadehya 81 71 81 -10 9.0 -
8 Graduation Time 73 70 73 -3 9.0 -
9 Marquez 69 69 73 -4 7.5 -
99 Knockemstiff - 65 74 -9 5.0 -
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