Official NHA Assessment

Race 1: GOLD CIRCLE WISHES YOU A HAPPY NEW YEAR MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Nellie Melba
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
7 / 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    Pinstripe            3    59.0    1    0.00     4.0   72    -5           -     -72
2    Vihaan's Queen       4    59.0    2    0.10     2.5   -     -2           -     +0
3    Questo E Quello      3    59.0    3    2.30     4.0   -     -3           -     +0
4    Nellie Melba         4    59.0    4    2.60     2.5   -     -            -     +0
5    Havre De Grace       3    57.5    5    2.70     4.0   -     -6           -     +0
6    Ocean Palace         3    59.0    6    3.50     4.0   74    -4           64    -10
7    Tropical Breeze      3    60.0    7    11.60    4.0   52    -3           42    -10
8    Miss Blitz           3    59.0    8    12.30    4.0   -     -5           -     +0
9    Joy To The World     2    57.5    9    14.50    0.0   49    -            41    -8
10   Alpine Girl          3    59.0    10   17.30    4.0   57    -5           47    -10
99   Princess Hema        3    59.0    99   0.00     4.0   -     -5           -5    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Pinstripe 72 79 - +79 4.0 -
2 Vihaan's Queen - 89 - +89 2.5 -
3 Questo E Quello - 73 - +73 4.0 -
4 Nellie Melba Line - 68 - +68 2.5
5 Havre De Grace - 75 - +75 4.0 -
6 Ocean Palace 74 63 64 -1 4.0 -
7 Tropical Breeze 52 50 42 +8 4.0 -
8 Miss Blitz - - - ✓ Match 4.0 -
9 Joy To The World 49 45 41 +4 0.0 -
10 Alpine Girl 57 52 47 +5 4.0 -
99 Princess Hema - 30 -5 +35 4.0 -
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