Official NHA Assessment

Race 6: www.pinkdrive.org D STAKES (For All Horses)

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Line Horse
Arverni Princess
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
4 / 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    Arverni Princess     2    57.5    1    0.00     5.5   62    62           62    +0
2    Whereverilaymyhat    4    55.5    2    0.60     10.0  54    49           49    -5
3    Rhythm               2    62.5    3    0.80     5.5   68    72           72    +4
4    Xplicit Content      4    51.5    4    1.20     10.0  52    41           42    -10
5    Grue Of Ice          6    52.0    5    4.00     0.0   50    62           62    +12
6    Purple Powahouse     8    58.5    6    4.60     0.0   59    75           75    +16
7    Prankster            2    59.0    7    4.70     5.5   66    65           65    -1
8    Cappellino           3    58.5    8    4.80     8.5   59    58           58    -1
9    Little Cracker       3    59.0    9    5.70     8.5   66    59           59    -7
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Arverni Princess Line 62 67 62 +5 5.5
2 Whereverilaymyhat 54 68 49 +19 10.0 -
3 Rhythm 68 67 72 -5 5.5 -
4 Xplicit Content 52 58 42 +16 10.0 -
5 Grue Of Ice 50 53 62 -9 0.0 -
6 Purple Powahouse 59 55 75 -20 0.0 -
7 Prankster 66 69 65 +4 5.5 -
8 Cappellino 59 61 58 +3 8.5 -
9 Little Cracker 66 61 59 +2 8.5 -
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