Official NHA Assessment

Race 3: TAB MR 85 HANDICAP (Open)

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Line Horse
American Star
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
3 / 8
Within 2 points
Significant Diffs
3 / 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    Scarlett Pimpernel   2    55.5    1    0.00     0.0   94    90           94    +0
2    American Grayson     3    57.5    2    0.50     9.0   82    83           83    +1
3    American Star        3    58.5    3    1.25     9.0   84    84           84    +0
4    Jet Dynasty          3    59.0    4    1.50     9.0   85    84           84    -1
5    Youcanthurrylove     5    58.5    5    2.50     0.0   82    100          100   +18
6    Professor Snape      2    60.0    6    8.00     0.0   87    99           99    +12
7    Catch The Tune       6    56.0    7    99.99    0.0   77    91           91    +14
8    Bey Suyay            4    60.0    8    99.99    5.0   85    89           89    +4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Scarlett Pimpernel 94 90 94 -4 0.0 -
2 American Grayson 82 84 83 +1 9.0 -
3 American Star Line 84 83 84 -1 9.0
4 Jet Dynasty 85 82 84 -2 9.0 -
5 Youcanthurrylove 82 86 100 -14 0.0 -
6 Professor Snape 87 68 99 -31 0.0 -
7 Catch The Tune 77 70 91 -21 0.0 -
8 Bey Suyay 85 84 89 -5 5.0 -
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