Official NHA Assessment

Race 4: ITRO ENGINEERING CLASSIFIED STAKES 77 (For horses with nett rating of 77 and below)

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Line Horse
Captive Moon
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
1 / 6
Within 2 points
Significant Diffs
2 / 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    The Octagon          2    58.5    1    0.00     0.0   74    69           69    -5
2    Captive Moon         6    60.0    2    1.00     0.0   76    76           76    +0
3    Ono No Komachi       3    54.0    3    1.50     8.0   71    47           61    -10
4    Aerial Display       5    58.5    4    1.60     0.0   73    72           72    -1
5    Empire Blue          4    58.5    5    1.85     5.0   73    62           63    -10
6    Karvani              7    58.5    6    4.85     0.0   72    69           69    -3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 The Octagon 74 76 69 +7 0.0 -
2 Captive Moon Line 76 75 76 -1 0.0
3 Ono No Komachi 71 66 61 +5 8.0 -
4 Aerial Display 73 68 72 -4 0.0 -
5 Empire Blue 73 71 63 +8 5.0 -
6 Karvani 72 73 69 +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