Official NHA Assessment

Race 2: BSA NATIONAL YEARLING SALE PROGRESS PLATE (For Maidens & 1,2 & 3 time winners)

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Line Horse
Duchess Of War
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
1 / 6
Within 2 points
Significant Diffs
4 / 6
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    Buster Barnes        2    56.5    1    0.00     0.0   83    62           62    -21
2    Aerial Display       5    57.5    2    6.00     0.0   77    64           67    -10
3    Duchess Of War       2    57.0    3    6.50     0.0   63    63           63    +0
4    Walking Thru Time    3    57.0    4    7.00     5.0   73    53           63    -10
5    Bruce's Spirit       6    60.0    5    10.00    0.0   65    69           69    +4
6    Follow The Band      2    54.0    6    12.00    0.0   56    57           57    +1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Buster Barnes 83 101 62 +39 0.0 -
2 Aerial Display 77 68 67 +1 0.0 -
3 Duchess Of War Line 63 55 63 -8 0.0
4 Walking Thru Time 73 73 63 +10 5.0 -
5 Bruce's Spirit 65 55 69 -14 0.0 -
6 Follow The Band 56 53 57 -4 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