Official NHA Assessment

Race 2: GOLD CIRCLE RACING YOUTUBE CHANNEL MAIDEN PLATE (F & M) (For Maiden Fillies & Mares)

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Line Horse
Stealth Attack
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
1 / 11
Within 2 points
Significant Diffs
8 / 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    Stealth Attack       2    60.0    1    0.00     0.5   69    69           69    +0
2    Fairy Tripp          2    57.0    2    0.30     0.5   -     63           63    +63
3    What Now My Gal      2    60.0    3    0.35     0.5   67    69           69    +2
4    Madame Zee           3    60.0    4    1.65     1.5   60    67           67    +7
5    Secret Winx          2    57.0    5    2.05     0.5   -     63           63    +63
6    Purple Flower        3    60.0    6    2.45     1.5   -     67           67    +67
7    Piece By Piece       2    55.5    7    2.85     0.5   -     60           60    +60
8    An Air Of Pride      2    57.0    8    6.25     0.5   -     63           63    +63
9    La Dame Drapeau      3    60.0    9    7.05     1.5   58    67           67    +9
10   Joy To The World     2    60.0    10   12.25    0.5   54    69           69    +15
99   Dressedtothenines    4    57.0    99   0.00     2.0   -     60           60    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Stealth Attack Line 69 52 69 -17 0.5
2 Fairy Tripp - 66 63 +3 0.5 -
3 What Now My Gal 67 47 69 -22 0.5 -
4 Madame Zee 60 69 67 +2 1.5 -
5 Secret Winx - 69 63 +6 0.5 -
6 Purple Flower - 74 67 +7 1.5 -
7 Piece By Piece - 77 60 +17 0.5 -
8 An Air Of Pride - 68 63 +5 0.5 -
9 La Dame Drapeau 58 58 67 -9 1.5 -
10 Joy To The World 54 45 69 -24 0.5 -
99 Dressedtothenines - 66 60 +6 2.0 -
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