Official NHA Assessment

Race 6: RACEHORSE OWNERS ASSOCIATION CLASSIFIED STAKES (For horses with nett rating of 74 and below)

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Line Horse
Harold The Duke
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
4 / 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    Nothingelsematters   5    58.0    1    0.00     0.0   68    77           74    +6
2    Harold The Duke      3    60.0    2    1.25     7.0   72    72           72    +0
3    San Quintin          6    54.0    3    2.00     0.0   60    73           73    +13
4    Puerto Plata (ARG)   3    58.0    4    2.25     7.0   68    67           67    -1
5    Caramel Fudge        3    52.5    5    5.00     7.0   53    52           52    -1
6    Ellis Island         4    56.0    6    5.75     3.5   66    66           66    +0
7    Great Affair         7    56.0    7    11.25    0.0   66    73           73    +7
8    Electric Storm       3    58.0    8    13.00    7.0   72    63           63    -9
99   Flash Lightning      4    56.0    99   0.00     3.5   -     66           66    +0
99   Karoo Gold           3    58.0    99   0.00     7.0   -     63           63    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Nothingelsematters 68 73 74 -1 0.0 -
2 Harold The Duke Line 72 86 72 +14 7.0
3 San Quintin 60 58 73 -15 0.0 -
4 Puerto Plata (ARG) 68 68 67 +1 7.0 -
5 Caramel Fudge 53 53 52 +1 7.0 -
6 Ellis Island 66 66 66 ✓ Match 3.5 -
7 Great Affair 66 63 73 -10 0.0 -
8 Electric Storm 72 70 63 +7 7.0 -
99 Flash Lightning - 69 66 +3 3.5 -
99 Karoo Gold - 67 63 +4 7.0 -
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