Official NHA Assessment

Race 4: BOOK FOR FATHERS DAY 0116811796 PINNACLE STAKES (F & M) (For Fillies and Mares)

Back to Race
Line Horse
Bless My Stars
Reference for assessment
Exact Matches
1 / 7
Calculated = Official
Close Matches
1 / 7
Within 2 points
Significant Diffs
4 / 7
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Bless My Stars       2    56.0    1    0.00     0.0   109   109          109   +0
2    Feather Boa          2    60.0    2    0.90     0.0   114   121          121   +7
3    Emirate Gina         2    54.0    3    1.75     0.0   103   108          108   +5
4    River Queraress      2    50.0    4    2.00     0.0   97    100          100   +3
5    Reny                 2    56.0    5    3.25     0.0   106   111          111   +5
99   Emerald Princess     3    52.0    99   0.00     1.5   -     98           98    +0
99   Tulip Tree           2    52.0    99   0.00     0.0   -     101          101   +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Bless My Stars Line 109 119 109 +10 0.0
2 Feather Boa 114 114 121 -7 0.0 -
3 Emirate Gina 103 103 108 -5 0.0 -
4 River Queraress 97 88 100 -12 0.0 -
5 Reny 106 91 111 -20 0.0 -
99 Emerald Princess - 98 98 ✓ Match 1.5 -
99 Tulip Tree - 96 101 -5 0.0 -
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