Official NHA Assessment

Race 6: BETWAY SUMMER CUP 29 NOVEMBER MR 80 HANDICAP (Open)

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Line Horse
After Hours
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
2 / 10
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    Clarkson             4    56.0    1    0.00     4.0   72    61           72    +0
2    Brave Viking         5    55.0    2    0.70     0.0   75    72           72    -3
3    After Hours          7    60.5    3    1.50     0.0   81    81           81    +0
4    Sea Shanty           4    57.0    4    1.70     4.0   74    66           66    -8
5    Zip Code             3    61.0    5    2.00     7.0   82    68           72    -10
6    Sutherland           4    58.0    6    2.40     4.0   79    67           69    -10
7    Eiffel Tower         4    57.5    7    4.20     4.0   75    65           65    -10
8    Lava Fire            3    58.0    8    5.90     7.0   76    59           66    -10
9    Bloomington          3    57.0    9    5.95     7.0   74    57           64    -10
99   Carnelo              6    48.0    99   0.00     0.0   -     53           53    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Clarkson 72 75 72 +3 4.0 -
2 Brave Viking 75 72 72 ✓ Match 0.0 -
3 After Hours Line 81 79 81 -2 0.0
4 Sea Shanty 74 71 66 +5 4.0 -
5 Zip Code 82 77 72 +5 7.0 -
6 Sutherland 79 85 69 +16 4.0 -
7 Eiffel Tower 75 69 65 +4 4.0 -
8 Lava Fire 76 69 66 +3 7.0 -
9 Bloomington 74 69 64 +5 7.0 -
99 Carnelo - 75 53 +22 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