Official NHA Assessment

Race 1: HAPPY VALENTINE'S DAY MAIDEN PLATE (F & M) (For Maiden Fillies & Mares)

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Line Horse
Smashing
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
7 / 8
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    Belle Fontaine       3    60.0    1    0.00     4.5   52    71           58    +6
2    Sweet Julia          2    60.0    2    0.30     3.0   69    74           74    +5
3    Smashing             4    60.0    3    4.20     5.0   70    70           70    +0
4    Ladies Day           3    57.5    4    7.50     4.5   60    66           66    +6
5    Ribbons 'N Flags     3    58.5    5    11.40    4.5   60    68           68    +8
6    Tina's Kitten        2    60.0    6    15.50    3.0   51    74           74    +23
7    Roy's Lizzie         6    60.0    7    20.00    0.0   -     80           80    +80
8    Roys' Daisy          6    60.0    8    20.20    0.0   -     80           80    +80
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Belle Fontaine 52 65 58 +7 4.5 -
2 Sweet Julia 69 73 74 -1 3.0 -
3 Smashing Line 70 78 70 +8 5.0
4 Ladies Day 60 56 66 -10 4.5 -
5 Ribbons 'N Flags 60 55 68 -13 4.5 -
6 Tina's Kitten 51 48 74 -26 3.0 -
7 Roy's Lizzie - - 80 -80 0.0 -
8 Roys' Daisy - 39 80 -41 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