Official NHA Assessment

Race 2: RACEHORSE OWNERS ASSOCIATION MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Lady Of Gold
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
7 / 9
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    Lady Of Gold         2    58.0    1    0.00     0.0   72    72           72    +0
2    I'm In Love          3    60.0    2    0.50     7.0   69    67           67    -2
3    Ray Flambe           2    58.0    3    3.50     0.0   54    73           73    +19
4    White Witch          2    58.0    4    5.50     0.0   71    72           72    +1
5    Montana Nymph        2    58.0    5    6.00     0.0   57    72           72    +15
6    Lily Of Orange       3    60.0    6    10.25    7.0   52    62           62    +10
7    Polly Flinders       2    58.0    7    10.50    0.0   50    72           72    +22
8    Sweet Ohanna         3    58.0    8    11.75    7.0   -     58           58    +58
99   Mercurial Jet        3    60.0    99   0.00     7.0   -     62           62    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Lady Of Gold Line 72 64 72 -8 0.0
2 I'm In Love 69 63 67 -4 7.0 -
3 Ray Flambe 54 58 73 -15 0.0 -
4 White Witch 71 52 72 -20 0.0 -
5 Montana Nymph 57 57 72 -15 0.0 -
6 Lily Of Orange 52 55 62 -7 7.0 -
7 Polly Flinders 50 50 72 -22 0.0 -
8 Sweet Ohanna - 52 58 -6 7.0 -
99 Mercurial Jet - 59 62 -3 7.0 -
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