Official NHA Assessment

Race 7: FOR HOSPITALITY BOOKINGS CALL 011 681 1796 MR 85 HANDICAP (Open)

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Line Horse
Deception Pass
Reference for assessment
Exact Matches
1 / 7
Calculated = Official
Close Matches
2 / 7
Within 2 points
Significant Diffs
1 / 7
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    Palace Dancer        3    58.0    1    0.00     3.0   87    74           87    +0
2    Deception Pass       4    58.0    2    1.25     1.5   81    81           81    +0
3    Claw                 4    60.0    3    2.25     1.5   85    84           84    -1
4    Willow Express       7    60.0    4    2.50     0.0   85    86           86    +1
5    Laughing William     5    55.5    5    6.00     0.0   76    75           75    -1
99   Rattle Bag           6    55.0    99   0.00     0.0   -     74           74    +0
99   Moola Man            4    59.5    99   0.00     1.5   -     80           80    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Palace Dancer 87 88 87 +1 3.0 -
2 Deception Pass Line 81 77 81 -4 1.5
3 Claw 85 91 84 +7 1.5 -
4 Willow Express 85 82 86 -4 0.0 -
5 Laughing William 76 75 75 ✓ Match 0.0 -
99 Rattle Bag - 71 74 -3 0.0 -
99 Moola Man - 75 80 -5 1.5 -
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