Official NHA Assessment

Race 2: CAPE TURF CLUB SYNDICATES 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 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
5 / 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    Knockout             2    57.0    1    0.00     0.0   88    90           90    +2
2    Princess Izzy        2    60.0    2    1.50     0.0   99    99           99    +0
3    Enemy Territory (IR  3    61.5    3    2.25     8.5   99    85           89    -10
4    School Policy        2    57.0    4    3.25     0.0   90    92           92    +2
5    Miss Marguerite      5    58.5    5    3.30     0.0   94    94           94    +0
6    Fun Zone             5    57.0    6    5.05     0.0   90    90           90    +0
7    Monashada            3    60.0    7    12.05    8.5   95    79           85    -10
8    Japanese Rose        3    58.5    8    16.05    8.5   92    76           82    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Knockout 88 101 90 +11 0.0 -
2 Princess Izzy Line 99 104 99 +5 0.0
3 Enemy Territory (IRE) 99 99 89 +10 8.5 -
4 School Policy 90 79 92 -13 0.0 -
5 Miss Marguerite 94 91 94 -3 0.0 -
6 Fun Zone 90 96 90 +6 0.0 -
7 Monashada 95 94 85 +9 8.5 -
8 Japanese Rose 92 80 82 -2 8.5 -
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