Official NHA Assessment

Race 6: TAB RUGBY PINNACLE STAKES (For all horses)

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Line Horse
Union Square
Reference for assessment
Exact Matches
1 / 13
Calculated = Official
Close Matches
3 / 13
Within 2 points
Significant Diffs
8 / 13
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    Atticus Finch        5    50.0    1    0.00     0.0   101   99           99    -2
2    Union Square         2    54.0    2    2.25     0.0   110   110          110   +0
3    Electric Gold        5    50.0    3    2.35     0.0   102   101          101   -1
4    Melech               5    54.0    4    2.95     0.0   110   109          109   -1
5    Litigation           3    56.0    5    3.65     8.0   110   96           100   -10
6    Safe Passage         3    60.0    6    4.50     8.0   120   103          110   -10
7    Nebraas              8    58.0    7    5.00     0.0   115   115          115   +0
8    Meridius             2    54.0    8    5.50     0.0   110   107          107   -3
9    East Coast           5    54.5    9    5.75     0.0   111   108          108   -3
10   Billy Bowlegs        5    58.0    10   9.05     0.0   118   115          115   -3
11   Duke Of Sussex       4    52.0    11   9.75     5.0   103   93           93    -10
12   Shango               5    52.0    12   17.50    0.0   105   103          103   -2
99   Rule By Force        3    54.0    99   0.00     8.0   -     91           91    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Atticus Finch 101 127 99 +28 0.0 -
2 Union Square Line 110 110 110 ✓ Match 0.0
3 Electric Gold 102 96 101 -5 0.0 -
4 Melech 110 118 109 +9 0.0 -
5 Litigation 110 113 100 +13 8.0 -
6 Safe Passage 120 108 110 -2 8.0 -
7 Nebraas 115 101 115 -14 0.0 -
8 Meridius 110 115 107 +8 0.0 -
9 East Coast 111 102 108 -6 0.0 -
10 Billy Bowlegs 118 104 115 -11 0.0 -
11 Duke Of Sussex 103 96 93 +3 5.0 -
12 Shango 105 105 103 +2 0.0 -
99 Rule By Force - 117 91 +26 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