Official NHA Assessment

Race 5: TABGOLD SCORE 6 SCORE 8 SCORE 10 MR 90 HANDICAP (Open)

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Line Horse
Super Fast
Reference for assessment
Exact Matches
2 / 9
Calculated = Official
Close Matches
3 / 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    Yamadori             4    59.0    1    0.00     2.5   90    83           90    +0
2    Russian Doll         2    58.5    2    1.50     1.0   90    85           85    -5
3    Super Fast           5    54.5    3    1.80     0.0   79    79           79    +0
4    B Fiftytwo           4    56.5    4    2.20     2.5   85    78           78    -7
5    Intrepid             3    53.5    5    2.50     2.0   77    73           73    -4
6    Diani                5    62.0    6    3.00     0.0   94    94           94    +0
7    Mr Henley            2    57.0    7    3.30     1.0   84    82           82    -2
8    Usa's Hope           2    59.0    8    4.30     1.0   88    86           86    -2
99   Shot Of Courage      3    52.0    99   0.00     2.0   -     70           70    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Yamadori 90 97 90 +7 2.5 -
2 Russian Doll 90 93 85 +8 1.0 -
3 Super Fast Line 79 83 79 +4 0.0
4 B Fiftytwo 85 68 78 -10 2.5 -
5 Intrepid 77 73 73 ✓ Match 2.0 -
6 Diani 94 96 94 +2 0.0 -
7 Mr Henley 84 82 82 ✓ Match 1.0 -
8 Usa's Hope 88 97 86 +11 1.0 -
99 Shot Of Courage - 73 70 +3 2.0 -
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