Official NHA Assessment

Race 7: BOOK A TABLE 0116811796 MR 100 HANDICAP (Open)

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Line Horse
Raffles
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
3 / 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    Millahue             3    52.5    1    0.00     1.5   85    79           85    +0
2    Bey Suyay            4    52.0    2    0.60     0.5   84    87           87    +3
3    Raffles              2    57.5    3    1.10     0.0   98    98           98    +0
4    Spin Doctor          3    54.5    4    2.10     1.5   89    88           88    -1
5    Zuzan                3    55.5    5    2.50     1.5   91    89           89    -2
6    Zeus                 3    59.5    6    4.75     1.5   99    93           93    -6
7    Electric Gold        5    60.0    7    5.00     0.0   103   97           97    -6
99   Youcanthurrylove     5    52.0    99   0.00     0.0   -     81           81    +0
99   Out Of Your League   5    52.0    99   0.00     0.0   -     81           81    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Millahue 85 81 85 -4 1.5 -
2 Bey Suyay 84 84 87 -3 0.5 -
3 Raffles Line 98 105 98 +7 0.0
4 Spin Doctor 89 90 88 +2 1.5 -
5 Zuzan 91 98 89 +9 1.5 -
6 Zeus 99 117 93 +24 1.5 -
7 Electric Gold 103 96 97 -1 0.0 -
99 Youcanthurrylove - 86 81 +5 0.0 -
99 Out Of Your League - 77 81 -4 0.0 -
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