Official NHA Assessment

Race 3: RACEHORSE OWNERS ASSOCIATION PLATE (3 year olds)

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Line Horse
My Best Shot
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
7 / 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    My Best Shot         3    60.0    1    0.00     8.0   105   105          105   +0
2    Play Act             2    56.0    2    1.25     0.0   88    117          117   +29
3    Golden Link          3    56.0    3    2.75     8.0   95    99           99    +4
4    Sakurajima           3    56.0    4    3.25     8.0   88    99           99    +11
5    Family Law           2    56.0    5    3.50     0.0   101   114          114   +13
6    Mister Speaker       3    56.0    6    16.00    8.0   103   97           97    -6
99   Walt Whitman         2    58.0    99   0.00     0.0   -     117          117   +0
99   Can't Say No         3    55.0    99   0.00     8.0   -     95           95    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 My Best Shot Line 105 116 105 +11 8.0
2 Play Act 88 80 117 -37 0.0 -
3 Golden Link 95 99 99 ✓ Match 8.0 -
4 Sakurajima 88 90 99 -9 8.0 -
5 Family Law 101 100 114 -14 0.0 -
6 Mister Speaker 103 91 97 -6 8.0 -
99 Walt Whitman - 88 117 -29 0.0 -
99 Can't Say No - 83 95 -12 8.0 -
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