Official NHA Assessment

Race 4: TABGOLD SCORE6 SCORE10 MR 76 HANDICAP (Open)

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Line Horse
Metallic Gold
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
3 / 8
Within 2 points
Significant Diffs
4 / 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    Camora               4    58.0    1    0.00     4.5   72    74           72    +0
2    Maxiumus             4    59.0    2    0.30     4.5   74    81           81    +7
3    Metallic Gold        3    59.0    3    0.90     7.0   75    75           75    +0
4    Global Dollar        2    55.0    4    2.00     0.0   80    80           80    +0
5    Winter With Jo       3    58.5    5    3.40     7.0   79    71           71    -8
6    Quick Star           6    57.5    6    4.50     0.0   71    82           82    +11
7    The Appeal           6    59.0    7    5.20     0.0   74    85           85    +11
8    Pewter Sky           3    58.5    8    5.95     7.0   74    70           70    -4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Camora 72 81 72 +9 4.5 -
2 Maxiumus 74 88 81 +7 4.5 -
3 Metallic Gold Line 75 75 75 ✓ Match 7.0
4 Global Dollar 80 81 80 +1 0.0 -
5 Winter With Jo 79 74 71 +3 7.0 -
6 Quick Star 71 60 82 -22 0.0 -
7 The Appeal 74 74 85 -11 0.0 -
8 Pewter Sky 74 71 70 +1 7.0 -
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