Official NHA Assessment

Race 5: ADVANCE PLATE (For winners)

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Line Horse
Regulate
Reference for assessment
Exact Matches
1 / 4
Calculated = Official
Close Matches
1 / 4
Within 2 points
Significant Diffs
3 / 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    Aerial Display       5    54.5    1    0.00     0.0   77    88           83    +6
2    Regulate             3    54.5    2    4.00     5.0   79    79           79    +0
3    Tradition            4    60.0    3    24.00    2.5   77    94           94    +17
99   Power Ranger         7    60.0    99   0.00     0.0   -     99           99    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Aerial Display 77 68 83 -15 0.0 -
2 Regulate Line 79 79 79 ✓ Match 5.0
3 Tradition 77 77 94 -17 2.5 -
99 Power Ranger - 69 99 -30 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