Official NHA Assessment

Race 7: OK LIQUOR MERIT RATED 70 HANDICAP (Open)

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Line Horse
Days Gone By
Reference for assessment
Exact Matches
0 / 4
Calculated = Official
Close Matches
0 / 4
Within 2 points
Significant Diffs
2 / 4
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    Tigers Eagle         3    58.0    1    0.00     4.0   67    63           67    +0
2    Days Gone By         3    52.0    2    2.50     4.0   55    55           55    +0
3    Midfield Girl        3    56.0    3    2.75     4.0   63    62           62    -1
4    At The Office        6    60.0    4    4.00     0.0   63    77           77    +14
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Tigers Eagle 67 79 67 +12 4.0 -
2 Days Gone By Line 55 51 55 -4 4.0
3 Midfield Girl 63 59 62 -3 4.0 -
4 At The Office 63 45 77 -32 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