Official NHA Assessment

Race 1: 4RACING WELCOMES YOU MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Aunt Pittypat
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
0 / 11
Within 2 points
Significant Diffs
11 / 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    Silver Hills         3    57.5    1    0.00     5.0   -     68           6     +6
2    Back To The Future   2    59.0    2    1.75     0.0   66    84           84    +18
3    Green Bubbles        2    57.5    3    9.25     0.0   77    78           78    +1
4    Little Lady          2    59.0    4    9.75     0.0   53    81           81    +28
5    Aunt Pittypat        3    59.0    5    10.25    5.0   71    71           71    +0
6    Red Maple            3    59.0    6    14.50    5.0   -     71           71    +71
7    Tsitsikamma Pearl    3    60.0    7    15.75    5.0   54    73           73    +19
8    Antananarivo         4    60.0    8    16.50    3.0   -     77           77    +77
9    Queen Britanna       2    59.0    9    17.00    0.0   66    81           81    +15
10   Casino Gail          3    59.0    10   22.00    5.0   -     71           71    +71
11   Royalgreenlight      3    56.5    11   33.00    5.0   -     66           66    +66
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Silver Hills - 108 6 +102 5.0 -
2 Back To The Future 66 74 84 -10 0.0 -
3 Green Bubbles 77 66 78 -12 0.0 -
4 Little Lady 53 65 81 -16 0.0 -
5 Aunt Pittypat Line 71 65 71 -6 5.0
6 Red Maple - 107 71 +36 5.0 -
7 Tsitsikamma Pearl 54 59 73 -14 5.0 -
8 Antananarivo - 57 77 -20 3.0 -
9 Queen Britanna 66 57 81 -24 0.0 -
10 Casino Gail - 54 71 -17 5.0 -
11 Royalgreenlight - - 66 -66 5.0 -
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