Official NHA Assessment

Race 6: THE FLASHING NUMBERS CHAMPION FILLIES STAKES (Fillies and Mares)

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Line Horse
Walking Thru Time
Reference for assessment
Exact Matches
1 / 6
Calculated = Official
Close Matches
2 / 6
Within 2 points
Significant Diffs
4 / 6
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    Brianna              4    60.0    1    0.00     3.0   104   97           97    -7
2    Zavannahgold         2    50.0    2    1.00     0.0   78    87           87    +9
3    Jacky Sparrow        3    52.0    3    2.25     6.0   82    78           78    -4
4    Walking Thru Time    3    50.0    4    2.75     6.0   73    73           73    +0
5    Obscure              4    52.0    5    4.75     3.0   80    81           81    +1
99   Sun Bird             3    54.0    99   0.00     6.0   -     79           79    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Brianna 104 103 97 +6 3.0 -
2 Zavannahgold 78 78 87 -9 0.0 -
3 Jacky Sparrow 82 80 78 +2 6.0 -
4 Walking Thru Time Line 73 73 73 ✓ Match 6.0
5 Obscure 80 87 81 +6 3.0 -
99 Sun Bird - 87 79 +8 6.0 -
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