Official NHA Assessment

Race 4: RACEHORSE OWNERS ASSOCIATION GRADUATION PLATE (Maidens,1 & 2 time winners)

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Line Horse
Abound
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
5 / 8
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    Executor             5    58.0    1    0.00     0.0   76    103          70    -6
2    Gimme's Lassie       5    57.5    2    0.05     0.0   99    102          102   +3
3    Abound               4    56.0    3    1.30     12.0  75    75           75    +0
4    Ravilious            3    55.5    4    3.05     10.5  86    77           77    -9
5    Aadehya              4    60.0    5    3.30     12.0  81    83           83    +2
6    White Hills          2    53.5    6    3.35     7.0   78    80           80    +2
7    Resurgence           4    57.0    7    6.60     12.0  73    77           77    +4
8    Justcantgetenough    2    57.0    8    8.35     7.0   70    87           87    +17
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Executor 76 87 70 +17 0.0 -
2 Gimme's Lassie 99 101 102 -1 0.0 -
3 Abound Line 75 77 75 +2 12.0
4 Ravilious 86 81 77 +4 10.5 -
5 Aadehya 81 71 83 -12 12.0 -
6 White Hills 78 66 80 -14 7.0 -
7 Resurgence 73 57 77 -20 12.0 -
8 Justcantgetenough 70 57 87 -30 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