Official NHA Assessment

Race 8: PERFECTLY PLACED CLASS 4 (F & M) (For Fillies & Mares. Benchmark at 60.0kg = 78)

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Line Horse
Plum Pudding
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
7 / 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    Coulditbe            4    55.0    1    0.00     1.0   73    72           72    -1
2    Plum Pudding         3    60.0    2    1.25     2.5   83    83           83    +0
3    Basic Maneuvers      2    58.0    3    1.45     0.0   79    83           83    +4
4    Heliotrope           3    56.5    4    2.20     2.5   76    75           75    -1
5    Green Isle           2    56.5    5    3.20     0.0   76    79           79    +3
6    Lickety Split        2    56.5    6    3.70     0.0   76    78           78    +2
7    Summer Night City    5    53.0    7    5.45     0.0   64    70           70    +6
8    Born Ready           2    55.5    8    5.50     0.0   74    75           75    +1
9    Cattaleya            2    56.0    9    13.00    0.0   70    76           76    +6
99   Hampstead Heath      4    59.5    99   0.00     1.0   -     81           81    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Coulditbe 73 69 72 -3 1.0 -
2 Plum Pudding Line 83 90 83 +7 2.5
3 Basic Maneuvers 79 79 83 -4 0.0 -
4 Heliotrope 76 67 75 -8 2.5 -
5 Green Isle 76 77 79 -2 0.0 -
6 Lickety Split 76 84 78 +6 0.0 -
7 Summer Night City 64 57 70 -13 0.0 -
8 Born Ready 74 55 75 -20 0.0 -
9 Cattaleya 70 67 76 -9 0.0 -
99 Hampstead Heath - 75 81 -6 1.0 -
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