Official NHA Assessment

Race 1: Gold Circle Salutes staff with 35 Years Service MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Chelsea Blue
Reference for assessment
Exact Matches
1 / 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    Chelsea Blue         3    60.0    1    0.00     2.5   69    69           69    +0
2    Nonoti               2    58.5    2    1.80     0.0   60    74           74    +14
3    Taste Maker          3    58.5    3    2.10     2.5   58    69           69    +11
4    Sweeter Than Honey   5    60.0    4    3.20     0.0   56    76           76    +20
5    Queen Jackson        3    60.0    5    5.10     2.5   52    69           69    +17
6    Ana Noba             5    60.0    6    5.85     0.0   63    74           74    +11
7    Phoenix Noir         3    60.0    7    8.05     2.5   -     69           69    +69
99   Madame Zee           3    60.0    99   0.00     2.5   -     69           69    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Chelsea Blue Line 69 60 69 -9 2.5
2 Nonoti 60 57 74 -17 0.0 -
3 Taste Maker 58 54 69 -15 2.5 -
4 Sweeter Than Honey 56 56 76 -20 0.0 -
5 Queen Jackson 52 50 69 -19 2.5 -
6 Ana Noba 63 50 74 -24 0.0 -
7 Phoenix Noir - - 69 -69 2.5 -
99 Madame Zee - 69 69 ✓ Match 2.5 -
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