Official NHA Assessment

Race 8: NEXT FAIRVIEW RACEMEETING FRIDAY 30 DECEMBER FM 68 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Opera Swing
Reference for assessment
Exact Matches
0 / 13
Calculated = Official
Close Matches
2 / 13
Within 2 points
Significant Diffs
8 / 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    River Cafe           4    61.5    1    0.00     3.5   71    65           71    +0
2    Wildest Dreams       3    61.5    2    0.50     7.0   72    65           65    -7
3    Opera Swing          4    57.0    3    1.00     3.5   62    62           62    +0
4    Maiden's Cove        3    55.5    4    1.05     7.0   60    52           52    -8
5    Sugarberry           2    54.0    5    1.30     0.0   70    62           62    -8
6    Silvia Louise        4    52.5    6    1.40     3.5   53    52           52    -1
7    Hey Siri             2    54.5    7    1.50     0.0   71    63           63    -8
8    Anatura              5    61.0    8    3.00     0.0   70    74           74    +4
9    Mansooriya           3    52.5    9    3.75     7.0   54    42           44    -10
10   Crafty Heart         4    58.0    10   6.00     3.5   64    58           58    -6
11   Maiguru              2    52.5    11   6.25     0.0   66    54           56    -10
12   Emaline              4    61.0    12   15.00    3.5   70    64           64    -6
99   Basetsana            5    59.5    99   0.00     0.0   -     68           68    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 River Cafe 71 74 71 +3 3.5 -
2 Wildest Dreams 72 87 65 +22 7.0 -
3 Opera Swing Line 62 82 62 +20 3.5
4 Maiden's Cove 60 58 52 +6 7.0 -
5 Sugarberry 70 60 62 -2 0.0 -
6 Silvia Louise 53 51 52 -1 3.5 -
7 Hey Siri 71 70 63 +7 0.0 -
8 Anatura 70 68 74 -6 0.0 -
9 Mansooriya 54 52 44 +8 7.0 -
10 Crafty Heart 64 63 58 +5 3.5 -
11 Maiguru 66 66 56 +10 0.0 -
12 Emaline 70 67 64 +3 3.5 -
99 Basetsana - 55 68 -13 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