Official NHA Assessment

Race 2: ALGOA CUP 28 OCTOBER 2022 MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
St Patrick's Day
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
8 / 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    Graphene Aerogel     3    60.0    1    0.00     9.0   59    36           36    -23
2    Colour Coded         3    60.0    2    0.75     9.0   47    42           42    -5
3    St Patrick's Day     4    60.0    3    2.25     5.0   49    49           49    +0
4    Antonia Augusta      2    57.0    4    4.75     0.0   54    48           48    -6
5    Polly Flinders       2    57.0    5    8.75     0.0   52    48           48    -4
6    Montana Nymph        2    57.0    6    11.50    0.0   63    48           53    -10
7    Cassowary            3    60.0    7    11.60    9.0   42    36           36    -6
8    Claregari            2    57.0    8    11.70    0.0   46    48           48    +2
9    Marmellata           3    57.0    9    15.20    9.0   -     30           30    +30
10   Herewegojo           4    60.0    10   19.20    5.0   47    44           44    -3
99   I'm In Love          3    60.0    99   0.00     9.0   -     36           36    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Graphene Aerogel 59 59 36 +23 9.0 -
2 Colour Coded 47 54 42 +12 9.0 -
3 St Patrick's Day Line 49 42 49 -7 5.0
4 Antonia Augusta 54 57 48 +9 0.0 -
5 Polly Flinders 52 50 48 +2 0.0 -
6 Montana Nymph 63 57 53 +4 0.0 -
7 Cassowary 42 37 36 +1 9.0 -
8 Claregari 46 42 48 -6 0.0 -
9 Marmellata - - 30 -30 9.0 -
10 Herewegojo 47 35 44 -9 5.0 -
99 I'm In Love - 63 36 +27 9.0 -
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