Official NHA Assessment

Race 6: FOR HOSPITALITY BOOKINGS CALL 011 681 1796 MR 80 HANDICAP (Open)

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Line Horse
Big Unit
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
4 / 10
Within 2 points
Significant Diffs
5 / 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    After Hours          7    58.5    1    0.00     0.0   77    90           77    +0
2    Winston's Wonder     3    55.0    2    0.25     8.0   86    67           76    -10
3    Union Rose           3    58.5    3    1.55     8.0   78    77           77    -1
4    Big Unit             3    62.5    4    1.85     8.0   85    85           85    +0
5    Fully Loaded         5    62.5    5    2.10     0.0   85    101          101   +16
6    Lava Fire            3    57.5    6    3.90     8.0   76    73           73    -3
7    Brave Viking         5    58.0    7    5.00     0.0   76    89           89    +13
8    Strewn Sky           2    57.5    8    7.90     0.0   75    88           88    +13
9    Take No Prisoners    2    55.5    9    13.20    0.0   87    84           84    -3
10   Futurenaire          3    57.0    10   15.60    8.0   75    71           71    -4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 After Hours 77 79 77 +2 0.0 -
2 Winston's Wonder 86 87 76 +11 8.0 -
3 Union Rose 78 69 77 -8 8.0 -
4 Big Unit Line 85 84 85 -1 8.0
5 Fully Loaded 85 94 101 -7 0.0 -
6 Lava Fire 76 69 73 -4 8.0 -
7 Brave Viking 76 72 89 -17 0.0 -
8 Strewn Sky 75 69 88 -19 0.0 -
9 Take No Prisoners 87 85 84 +1 0.0 -
10 Futurenaire 75 72 71 +1 8.0 -
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