Official NHA Assessment

Race 3: GLEN MONARCH BORROWDALE B STAKES 84 (For All Horses with a nett rating of 84 & below)

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Line Horse
Empire Blue
Reference for assessment
Exact Matches
0 / 4
Calculated = Official
Close Matches
0 / 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    Raining Again        6    58.5    1    0.00     0.0   81    83           83    +2
2    Empire Blue          4    57.0    2    0.25     1.0   78    78           78    +0
3    Power Ranger         7    60.0    3    3.75     0.0   84    87           87    +3
4    Ian's Ferrari        3    53.0    4    5.75     2.5   74    67           67    -7
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Raining Again 81 73 83 -10 0.0 -
2 Empire Blue Line 78 71 78 -7 1.0
3 Power Ranger 84 69 87 -18 0.0 -
4 Ian's Ferrari 74 63 67 -4 2.5 -
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