Official NHA Assessment

Race 8: NEXT VAAL RACEMEETING THURSDAY 19 JANUARY MR 72 HANDICAP (Open)

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Line Horse
After Hours
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
6 / 11
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    Save The Queen       3    56.0    1    0.00     5.0   74    51           74    +0
2    Irontail             4    57.5    2    0.05     2.5   67    59           59    -8
3    Kwazzi's Lady        4    54.5    3    0.10     2.5   60    53           53    -7
4    Robert Burns         3    58.5    4    0.20     5.0   69    56           59    -10
5    After Hours          7    55.5    5    1.50     0.0   63    63           63    +0
6    Pinch Hit            2    60.0    6    2.00     0.0   82    72           72    -10
7    Parker Getrix        4    53.0    7    3.00     2.5   58    52           52    -6
8    Earl of Cardigan     3    49.5    8    3.25     5.0   52    40           42    -10
9    Waqaas (AUS)         6    59.5    9    4.75     0.0   76    68           68    -8
10   Fog Bank             2    59.0    10   7.75     0.0   80    67           70    -10
99   Rattle Bag           6    56.5    99   0.00     0.0   -     62           62    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Save The Queen 74 75 74 +1 5.0 -
2 Irontail 67 64 59 +5 2.5 -
3 Kwazzi's Lady 60 82 53 +29 2.5 -
4 Robert Burns 69 71 59 +12 5.0 -
5 After Hours Line 63 79 63 +16 0.0
6 Pinch Hit 82 74 72 +2 0.0 -
7 Parker Getrix 58 56 52 +4 2.5 -
8 Earl of Cardigan 52 50 42 +8 5.0 -
9 Waqaas (AUS) 76 56 68 -12 0.0 -
10 Fog Bank 80 75 70 +5 0.0 -
99 Rattle Bag - 71 62 +9 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