Official NHA Assessment

Race 7: OFF TO STUD STAKES (Listed) (4 years and older Fillies and Mares)

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Line Horse
Callmegetrix
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
8 / 10
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    Callmegetrix         4    61.5    1    0.00     7.0   108   108          108   +0
2    Tomyris              4    60.0    2    1.80     7.0   95    108          108   +13
3    Fatal Gem            4    58.5    3    2.80     7.0   91    104          104   +13
4    White Pearl          4    61.5    4    3.20     7.0   114   110          110   -4
5    Perilla              5    58.5    5    3.25     0.0   92    118          118   +26
6    Two G's              3    57.0    6    4.75     9.0   89    95           95    +6
7    Sovereign Grant      4    61.5    7    5.15     7.0   103   108          108   +5
8    Hodgepodge           3    55.5    8    5.45     9.0   85    92           92    +7
9    Acacia's Blossom     2    55.5    9    5.75     0.0   82    110          110   +28
99   Forgiveness          4    58.5    99   0.00     7.0   -     102          102   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Callmegetrix Line 108 113 108 +5 7.0
2 Tomyris 95 93 108 -15 7.0 -
3 Fatal Gem 91 91 104 -13 7.0 -
4 White Pearl 114 114 110 +4 7.0 -
5 Perilla 92 89 118 -29 0.0 -
6 Two G's 89 89 95 -6 9.0 -
7 Sovereign Grant 103 92 108 -16 7.0 -
8 Hodgepodge 85 78 92 -14 9.0 -
9 Acacia's Blossom 82 66 110 -44 0.0 -
99 Forgiveness - 94 102 -8 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