Official NHA Assessment

Race 8: RACING240 MR 100 HANDICAP (Open)

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Line Horse
Zip Code
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
4 / 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    Claw                 4    54.0    1    0.00     0.5   88    90           88    +0
2    Zip Code             3    52.0    2    2.40     1.5   86    86           86    +0
3    Grand Crescendo      3    60.5    3    3.50     1.5   107   102          102   -5
4    Presley              4    56.5    4    4.10     0.5   93    96           96    +3
5    Command Pilot        2    57.0    5    4.40     0.0   94    97           97    +3
6    Artist's Model       3    56.5    6    7.40     1.5   96    93           93    -3
7    The Africa House     4    56.0    7    10.90    0.5   92    94           94    +2
8    Pressonregardless    4    53.5    8    12.00    0.5   87    89           89    +2
9    Queen Of Love        3    58.0    9    15.25    1.5   99    96           96    -3
10   Natyam               5    61.0    10   26.75    0.0   102   105          105   +3
11   Zuzan                3    59.0    11   32.25    1.5   98    98           98    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Claw 88 91 88 +3 0.5 -
2 Zip Code Line 86 77 86 -9 1.5
3 Grand Crescendo 107 107 102 +5 1.5 -
4 Presley 93 90 96 -6 0.5 -
5 Command Pilot 94 93 97 -4 0.0 -
6 Artist's Model 96 96 93 +3 1.5 -
7 The Africa House 92 93 94 -1 0.5 -
8 Pressonregardless 87 109 89 +20 0.5 -
9 Queen Of Love 99 86 96 -10 1.5 -
10 Natyam 102 102 105 -3 0.0 -
11 Zuzan 98 98 98 ✓ Match 1.5 -
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