Official NHA Assessment

Race 6: RACEHORSE OWNERS ASSOCIATION PINNACLE STAKES (Open to all horses)

Back to Race
Line Horse
American Landing
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
7 / 11
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Heathcliff           2    58.0    1    0.00     0.0   94    85           85    -9
2    Ideal Angel          5    57.5    2    2.25     0.0   96    88           88    -8
3    American Landing     7    55.0    3    4.50     0.0   80    80           80    +0
4    First Street         5    57.5    4    4.60     0.0   98    85           88    -10
5    Jaeger Moon          7    62.0    5    4.65     0.0   102   94           94    -8
6    Light Without        4    52.0    6    6.90     1.5   67    70           70    +3
7    Magnum Fire          7    55.0    7    10.15    0.0   80    79           79    -1
8    Zatara Magic         5    56.5    8    14.40    0.0   91    82           82    -9
9    Ellis Island         4    52.0    9    15.15    1.5   63    70           70    +7
10   Great Affair         7    52.0    10   15.90    0.0   67    73           73    +6
11   Lord Nelson          3    52.5    11   24.40    4.0   70    66           66    -4
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Heathcliff 94 100 85 +15 0.0 -
2 Ideal Angel 96 94 88 +6 0.0 -
3 American Landing Line 80 80 80 ✓ Match 0.0
4 First Street 98 97 88 +9 0.0 -
5 Jaeger Moon 102 97 94 +3 0.0 -
6 Light Without 67 71 70 +1 1.5 -
7 Magnum Fire 80 59 79 -20 0.0 -
8 Zatara Magic 91 114 82 +32 0.0 -
9 Ellis Island 63 66 70 -4 1.5 -
10 Great Affair 67 63 73 -10 0.0 -
11 Lord Nelson 70 55 66 -11 4.0 -
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