Official NHA Assessment

Race 4: RACING240 OPEN MAIDEN (For all Maidens)

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Line Horse
Outback Express
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
2 / 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    Darling Girl         2    50.5    1    0.00     0.0   52    58           58    +6
2    Outback Express      2    59.5    2    0.10     0.0   76    76           76    +0
3    Lady Penny           2    50.0    3    3.35     0.0   70    60           60    -10
4    Mont Tremblant       3    60.0    4    4.10     9.5   61    60           60    -1
5    Grey Warrior         2    58.0    5    4.35     0.0   73    74           74    +1
6    Sempre Bella         3    58.0    6    20.60    9.5   57    54           54    -3
99   Go Dancing           3    49.0    99   0.00     9.5   -     36           36    +0
99   Global Scene         2    58.0    99   0.00     0.0   -     73           73    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Darling Girl 52 54 58 -4 0.0 -
2 Outback Express Line 76 71 76 -5 0.0
3 Lady Penny 70 63 60 +3 0.0 -
4 Mont Tremblant 61 56 60 -4 9.5 -
5 Grey Warrior 73 70 74 -4 0.0 -
6 Sempre Bella 57 56 54 +2 9.5 -
99 Go Dancing - 50 36 +14 9.5 -
99 Global Scene - 61 73 -12 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