Official NHA Assessment

Race 4: CLASSIC DAY 7 MARCH MR 84 HANDICAP (Open)

Back to Race
Line Horse
Zip Code
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
4 / 10
Within 2 points
Significant Diffs
6 / 10
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Robert Browning      3    58.0    1    0.00     6.0   80    78           80    +0
2    Zip Code             3    57.5    2    2.50     6.0   79    79           79    +0
3    Buddy Boy            3    56.5    3    2.75     6.0   87    77           77    -10
4    Tommy Shelby         2    61.5    4    2.95     0.0   97    99           99    +2
5    Guerilla Warfare     3    56.0    5    3.05     6.0   76    76           76    +0
6    Force Publique       2    54.5    6    3.25     0.0   83    85           85    +2
7    On Target            3    60.0    7    3.85     6.0   92    83           83    -9
8    Open Highway         4    59.5    8    6.10     3.0   88    87           87    -1
9    We Are The Logans    2    59.0    9    6.40     0.0   82    92           92    +10
99   Eiffel Tower         4    54.5    99   0.00     3.0   -     77           77    +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Robert Browning 80 87 80 +7 6.0 -
2 Zip Code Line 79 77 79 -2 6.0
3 Buddy Boy 87 85 77 +8 6.0 -
4 Tommy Shelby 97 101 99 +2 0.0 -
5 Guerilla Warfare 76 75 76 -1 6.0 -
6 Force Publique 83 84 85 -1 0.0 -
7 On Target 92 95 83 +12 6.0 -
8 Open Highway 88 94 87 +7 3.0 -
9 We Are The Logans 82 73 92 -19 0.0 -
99 Eiffel Tower - 69 77 -8 3.0 -
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