Official NHA Assessment

Race 3: FIRST MUTUAL MERIT RATED 70 HANDICAP (Open)

Back to Race
Line Horse
Kagura
Reference for assessment
Exact Matches
1 / 7
Calculated = Official
Close Matches
3 / 7
Within 2 points
Significant Diffs
3 / 7
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Sally Port           2    57.0    1    0.00     0.0   73    66           73    +0
2    Ono No Komachi       3    54.0    2    0.75     4.5   58    55           55    -3
3    Kagura               4    61.0    3    2.75     2.0   72    72           72    +0
4    Aerial Display       5    59.5    4    3.50     0.0   69    72           72    +3
5    Empire Blue          4    61.0    5    7.00     2.0   72    70           70    -2
6    Prince Of Denmark    4    52.0    6    7.75     2.0   52    52           52    +0
99   Fearless Bomber      3    52.0    99   0.00     4.5   -     47           47    +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Sally Port 73 79 73 +6 0.0 -
2 Ono No Komachi 58 66 55 +11 4.5 -
3 Kagura Line 72 72 72 ✓ Match 2.0
4 Aerial Display 69 68 72 -4 0.0 -
5 Empire Blue 72 71 70 +1 2.0 -
6 Prince Of Denmark 52 51 52 -1 2.0 -
99 Fearless Bomber - 56 47 +9 4.5 -
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