Official NHA Assessment

Race 5: RACING TODAY MR 74 HANDICAP (Open)

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Line Horse
Clarkson
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
3 / 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    Frere Jacques        3    61.0    1    0.00     2.0   76    73           76    +0
2    Clarkson             4    60.5    2    5.50     0.5   75    75           75    +0
3    Six Of All           2    56.5    3    5.70     0.0   71    68           68    -3
4    Commander Of All     2    52.0    4    6.00     0.0   56    59           59    +3
5    Oklahoma Smokeshow   2    59.0    5    7.75     0.0   81    73           73    -8
6    Gran Canaria         3    60.0    6    8.75     2.0   77    71           71    -6
7    Can't Catch Me       5    52.5    7    13.75    0.0   57    60           60    +3
8    Guerilla Warfare     3    60.5    8    20.50    2.0   75    72           72    -3
9    Way To Burn          3    54.5    9    23.75    2.0   63    60           60    -3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Frere Jacques 76 84 76 +8 2.0 -
2 Clarkson Line 75 75 75 ✓ Match 0.5
3 Six Of All 71 71 68 +3 0.0 -
4 Commander Of All 56 57 59 -2 0.0 -
5 Oklahoma Smokeshow 81 80 73 +7 0.0 -
6 Gran Canaria 77 77 71 +6 2.0 -
7 Can't Catch Me 57 56 60 -4 0.0 -
8 Guerilla Warfare 75 75 72 +3 2.0 -
9 Way To Burn 63 63 60 +3 2.0 -
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