Official NHA Assessment

Race 2: #YOUCANBETONUS! MAIDEN PLATE (For all Maidens)

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Line Horse
Global Drumbeat
Reference for assessment
Exact Matches
1 / 7
Calculated = Official
Close Matches
1 / 7
Within 2 points
Significant Diffs
3 / 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    Alex Miller          3    57.5    1    0.00     0.5   67    59           59    -8
2    Prince Antonio       3    60.0    2    2.25     0.5   56    67           67    +11
3    American Matador     3    60.0    3    3.50     0.5   74    65           65    -9
4    Global Drumbeat      3    60.0    4    3.75     0.5   65    65           65    +0
5    American Pitbull     5    60.0    5    5.00     0.0   62    65           65    +3
6    Top Dollar           5    60.0    6    6.25     0.0   44    65           65    +21
7    Monocle              3    56.0    7    8.25     0.5   47    56           56    +9
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Alex Miller 67 71 59 +12 0.5 -
2 Prince Antonio 56 63 67 -4 0.5 -
3 American Matador 74 71 65 +6 0.5 -
4 Global Drumbeat Line 65 65 65 ✓ Match 0.5
5 American Pitbull 62 62 65 -3 0.0 -
6 Top Dollar 44 42 65 -23 0.0 -
7 Monocle 47 52 56 -4 0.5 -
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