Official NHA Assessment

Race 4: INDIGO SUPPLEMENTS EQUINE MAIDEN PLATE (F & M) (For Maiden F & M)

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Line Horse
Lilac Snow
Reference for assessment
Exact Matches
0 / 13
Calculated = Official
Close Matches
3 / 13
Within 2 points
Significant Diffs
10 / 13
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    Season's Greetings   2    57.0    1    0.00     1.0   -     56           6     +6
2    Queensland           2    57.0    2    2.10     1.0   -     56           56    +56
3    Wise Counsel         2    57.0    3    2.50     1.0   -     56           56    +56
4    Lilac Snow           2    60.0    4    6.20     1.0   62    62           62    +0
5    Genovefa             3    58.5    5    6.25     2.0   66    57           57    -9
6    Surreal Song         2    57.0    6    7.35     1.0   -     56           56    +56
7    Windsor Silk         2    57.0    7    7.55     1.0   -     56           56    +56
8    Erebus               2    53.0    8    9.75     1.0   -     48           48    +48
9    Amber Eyes           3    56.0    9    10.50    2.0   56    52           52    -4
10   Sunfire              2    60.0    10   11.00    1.0   76    62           66    -10
11   Rhum De Vie          2    57.0    11   15.00    1.0   -     56           56    +56
99   Master's Lady        2    57.0    99   0.00     1.0   -     56           56    +0
99   Gaslight Dancer      2    57.0    99   0.00     1.0   -     56           56    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Season's Greetings - 87 6 +81 1.0 -
2 Queensland - 80 56 +24 1.0 -
3 Wise Counsel - 86 56 +30 1.0 -
4 Lilac Snow Line 62 60 62 -2 1.0
5 Genovefa 66 72 57 +15 2.0 -
6 Surreal Song - - 56 -56 1.0 -
7 Windsor Silk - 76 56 +20 1.0 -
8 Erebus - 66 48 +18 1.0 -
9 Amber Eyes 56 50 52 -2 2.0 -
10 Sunfire 76 64 66 -2 1.0 -
11 Rhum De Vie - 50 56 -6 1.0 -
99 Master's Lady - 70 56 +14 1.0 -
99 Gaslight Dancer - 85 56 +29 1.0 -
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