Official NHA Assessment

Race 10: MERCHANTS ON LONG CHAIRMAN'S CUP (Grade 3) (Open)

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Line Horse
Arctic Drift
Reference for assessment
Exact Matches
0 / 15
Calculated = Official
Close Matches
2 / 15
Within 2 points
Significant Diffs
11 / 15
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    Crome Yellow         7    58.0    1    0.00     0.0   106   102          102   -4
2    Senso Unico          3    56.0    2    1.00     8.0   106   87           96    -10
3    Thefutureisbright    3    50.0    3    1.50     8.0   95    75           85    -10
4    Arctic Drift         5    52.0    4    2.75     0.0   93    93           93    +0
5    Baratheon            3    52.0    5    2.80     8.0   96    77           86    -10
6    Super Silvano        5    58.0    6    3.20     0.0   108   105          105   -3
7    Rex Union            4    56.0    7    3.25     4.5   104   92           94    -10
8    One Way Traffic      4    60.0    8    3.55     4.5   111   99           101   -10
9    Black Thorn          4    56.0    9    3.85     4.5   103   91           93    -10
10   Shango               5    58.0    10   4.35     0.0   108   103          103   -5
11   Han Solo             5    54.0    11   5.85     0.0   100   94           94    -6
12   Navy Strength        3    52.0    12   6.25     8.0   99    74           89    -10
13   Chollima             6    52.5    13   6.55     0.0   98    91           91    -7
14   Master Redoute       3    52.0    14   7.05     8.0   99    74           89    -10
99   Zillzaal             6    60.0    99   0.00     0.0   -     106          106   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Crome Yellow 106 109 102 +7 0.0 -
2 Senso Unico 106 112 96 +16 8.0 -
3 Thefutureisbright 95 94 85 +9 8.0 -
4 Arctic Drift Line 93 97 93 +4 0.0
5 Baratheon 96 106 86 +20 8.0 -
6 Super Silvano 108 103 105 -2 0.0 -
7 Rex Union 104 97 94 +3 4.5 -
8 One Way Traffic 111 109 101 +8 4.5 -
9 Black Thorn 103 102 93 +9 4.5 -
10 Shango 108 105 103 +2 0.0 -
11 Han Solo 100 102 94 +8 0.0 -
12 Navy Strength 99 97 89 +8 8.0 -
13 Chollima 98 85 91 -6 0.0 -
14 Master Redoute 99 113 89 +24 8.0 -
99 Zillzaal - 112 106 +6 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