Official NHA Assessment

Race 3: MERIT RATED 85 HANDICAP (Open)

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Line Horse
Red Penny
Reference for assessment
Exact Matches
2 / 9
Calculated = Official
Close Matches
5 / 9
Within 2 points
Significant Diffs
0 / 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    King's Crown         3    58.0    1    0.00     2.5   79    77           79    +0
2    Red Penny            2    58.5    2    3.00     0.0   85    85           85    +0
3    The Octagon          2    56.5    3    3.05     0.0   76    81           81    +5
4    Pocket Watch         2    60.0    4    3.55     0.0   83    87           87    +4
5    Chili Bomb           3    56.5    5    5.55     2.5   76    74           74    -2
6    Raining Again        6    55.0    6    6.55     0.0   73    76           76    +3
7    Jack In The Green    2    58.5    7    15.55    0.0   80    83           83    +3
8    Coppola              4    60.0    8    22.55    1.0   83    84           84    +1
99   Solartrip            3    57.0    99   0.00     2.5   -     75           75    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 King's Crown 79 79 79 ✓ Match 2.5 -
2 Red Penny Line 85 85 85 ✓ Match 0.0
3 The Octagon 76 76 81 -5 0.0 -
4 Pocket Watch 83 83 87 -4 0.0 -
5 Chili Bomb 76 76 74 +2 2.5 -
6 Raining Again 73 73 76 -3 0.0 -
7 Jack In The Green 80 80 83 -3 0.0 -
8 Coppola 83 83 84 -1 1.0 -
99 Solartrip - 77 75 +2 2.5 -
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