Official NHA Assessment

Race 2: MERIT RATED 58 HANDICAP (Open)

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Line Horse
Mill Creek
Reference for assessment
Exact Matches
1 / 7
Calculated = Official
Close Matches
1 / 7
Within 2 points
Significant Diffs
2 / 7
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    Emily's Song (ZIM)   4    60.0    1    0.00     2.5   58    53           58    +0
2    Albar Warning        3    54.0    2    0.75     2.0   48    42           42    -6
3    Cario                4    52.0    3    2.00     2.5   41    37           37    -4
4    Mill Creek           7    56.5    4    2.50     0.0   51    51           51    +0
5    Assume               3    59.5    5    2.75     2.0   59    53           53    -6
6    Manvir               3    59.0    6    3.00     2.0   58    52           52    -6
7    Master Ming          3    54.0    7    8.00     2.0   48    42           42    -6
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Emily's Song (ZIM) 58 66 58 +8 2.5 -
2 Albar Warning 48 48 42 +6 2.0 -
3 Cario 41 41 37 +4 2.5 -
4 Mill Creek Line 51 55 51 +4 0.0
5 Assume 59 58 53 +5 2.0 -
6 Manvir 58 52 52 ✓ Match 2.0 -
7 Master Ming 48 46 42 +4 2.0 -
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