Official NHA Assessment

Race 4: MERIT RATED 91 HANDICAP (Open)

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Line Horse
Raining Again
Reference for assessment
Exact Matches
0 / 4
Calculated = Official
Close Matches
0 / 4
Within 2 points
Significant Diffs
4 / 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    Empire Blue          4    54.0    1    0.00     1.0   78    75           78    +0
2    Raining Again        6    56.0    2    2.50     0.0   83    83           83    +0
3    My Secret Place      5    59.5    3    3.25     0.0   90    90           90    +0
4    Master Tik Tok       5    60.0    4    10.25    0.0   91    89           89    -2
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Empire Blue 78 71 78 -7 1.0 -
2 Raining Again Line 83 73 83 -10 0.0
3 My Secret Place 90 71 90 -19 0.0 -
4 Master Tik Tok 91 80 89 -9 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