Official NHA Assessment

Race 4: CATCH DJ ANKLETAP, ROB FORBES ON SUMMER CUP DAY MAIDEN HANDICAP (For Maidens with 3 or more runs)

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Line Horse
Copper Cliff
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
3 / 11
Within 2 points
Significant Diffs
7 / 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    Jabari Thimba        2    57.5    1    0.00     0.0   77    62           77    +0
2    Oklahoma Smokeshow   2    49.5    2    3.20     0.0   63    48           53    -10
3    Copper Cliff         2    56.0    3    3.40     0.0   60    60           60    +0
4    War Talk             2    55.0    4    5.40     0.0   72    57           62    -10
5    Battle Ofthe Bulge   4    60.0    5    8.20     4.0   68    59           59    -9
6    Frankie Fahrenheit   2    53.0    6    9.50     0.0   68    53           58    -10
7    Comic Artist         2    54.0    7    16.50    0.0   70    55           60    -10
8    New Life             3    52.0    8    22.00    7.0   49    37           39    -10
9    Erik's Girl          2    52.0    9    25.25    0.0   66    51           56    -10
99   Jabberwocky          4    56.5    99   0.00     4.0   -     52           52    +0
99   Delaware River       2    54.5    99   0.00     0.0   -     56           56    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Jabari Thimba 77 84 77 +7 0.0 -
2 Oklahoma Smokeshow 63 80 53 +27 0.0 -
3 Copper Cliff Line 60 75 60 +15 0.0
4 War Talk 72 76 62 +14 0.0 -
5 Battle Ofthe Bulge 68 60 59 +1 4.0 -
6 Frankie Fahrenheit 68 63 58 +5 0.0 -
7 Comic Artist 70 75 60 +15 0.0 -
8 New Life 49 38 39 -1 7.0 -
9 Erik's Girl 66 67 56 +11 0.0 -
99 Jabberwocky - 53 52 +1 4.0 -
99 Delaware River - 77 56 +21 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