Official NHA Assessment

Race 6: PERFECTLY PLACED MIDDLE STAKES (F & M) (For Fillies and Mares with a nett rating of 102 & below)

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Line Horse
Princess Izzy
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
3 / 10
Within 2 points
Significant Diffs
5 / 10
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    Enemy Territory (IR  3    60.0    1    0.00     1.0   97    93           93    -4
2    Princess Izzy        2    60.0    2    0.75     0.0   99    99           99    +0
3    Fun Zone             5    57.0    3    1.25     0.0   90    93           93    +3
4    Monashada            3    60.0    4    1.30     1.0   95    96           96    +1
5    School Policy        2    57.0    5    1.60     0.0   90    92           92    +2
6    Siddeley             2    57.0    6    1.80     0.0   90    92           92    +2
7    Wugug                2    54.0    7    3.05     0.0   85    85           85    +0
8    Royal Invitation     5    57.0    8    3.10     0.0   87    91           91    +4
9    Who Do You Love      2    60.0    9    16.10    0.0   96    95           95    -1
99   Miss Marguerite      5    58.5    99   0.00     0.0   -     92           92    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Enemy Territory (IRE) 97 99 93 +6 1.0 -
2 Princess Izzy Line 99 104 99 +5 0.0
3 Fun Zone 90 96 93 +3 0.0 -
4 Monashada 95 94 96 -2 1.0 -
5 School Policy 90 79 92 -13 0.0 -
6 Siddeley 90 105 92 +13 0.0 -
7 Wugug 85 76 85 -9 0.0 -
8 Royal Invitation 87 99 91 +8 0.0 -
9 Who Do You Love 96 96 95 +1 0.0 -
99 Miss Marguerite - 91 92 -1 0.0 -
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