Official NHA Assessment

Race 4: DE KOCK AND SHAM FAMILIES MAIDEN PLATE (For all Maidens)

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Line Horse
Seed Seeker
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
4 / 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    Trust                2    58.0    1    0.00     6.5   -     78           6     +6
2    Monkey Puzzle        4    60.0    2    1.00     11.0  71    73           73    +2
3    One Eye On Vegas     3    58.0    3    2.00     9.5   -     72           72    +72
4    Seed Seeker          2    58.0    4    4.20     6.5   78    78           78    +0
5    Ubermensch           3    60.0    5    9.45     9.5   71    76           76    +5
6    District Attorney    3    58.0    6    9.95     9.5   -     72           72    +72
7    Total Eruption       3    54.0    7    11.35    9.5   -     64           64    +64
8    Say A Wish           2    55.5    8    17.85    6.5   -     73           73    +73
99   Arizona Magic        4    60.0    99   0.00     11.0  -     73           73    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Trust - 110 6 +104 6.5 -
2 Monkey Puzzle 71 79 73 +6 11.0 -
3 One Eye On Vegas - 106 72 +34 9.5 -
4 Seed Seeker Line 78 81 78 +3 6.5
5 Ubermensch 71 74 76 -2 9.5 -
6 District Attorney - 74 72 +2 9.5 -
7 Total Eruption - 62 64 -2 9.5 -
8 Say A Wish - 73 73 ✓ Match 6.5 -
99 Arizona Magic - 66 73 -7 11.0 -
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