Official NHA Assessment

Race 6: F&I INSURANCE PINNACLE STAKES (For all horses)

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Line Horse
Rulership
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
9 / 11
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    Dyce                 6    62.0    1    0.00     0.0   128   136          134   +6
2    Rulership            2    60.0    2    0.75     6.5   119   119          119   +0
3    Cosmic Star          3    52.0    3    1.15     9.5   105   97           97    -8
4    William Robertson    6    62.0    4    1.75     0.0   125   136          136   +11
5    Red Bomber           2    54.0    5    2.75     6.5   109   107          107   -2
6    Halberdier           4    50.0    6    4.75     11.0  88    90           90    +2
7    Anfields Rocket      5    56.0    7    6.45     0.0   113   124          124   +11
8    Sheldon              6    58.0    8    8.25     0.0   115   128          128   +13
9    Mover And Shaker     5    60.0    9    10.75    0.0   118   132          132   +14
10   Mist In Scotland     2    50.0    10   11.00    6.5   92    99           99    +7
99   Cliff Hanger         2    56.0    99   0.00     6.5   -     111          111   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Dyce 128 128 134 -6 0.0 -
2 Rulership Line 119 118 119 -1 6.5
3 Cosmic Star 105 105 97 +8 9.5 -
4 William Robertson 125 124 136 -12 0.0 -
5 Red Bomber 109 86 107 -21 6.5 -
6 Halberdier 88 83 90 -7 11.0 -
7 Anfields Rocket 113 106 124 -18 0.0 -
8 Sheldon 115 106 128 -22 0.0 -
9 Mover And Shaker 118 109 132 -23 0.0 -
10 Mist In Scotland 92 77 99 -22 6.5 -
99 Cliff Hanger - 111 111 ✓ Match 6.5 -
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