Official NHA Assessment

Race 6: FOR HOSPITALITY BOOKINGS CALL 011 681 1796 MR 68 HANDICAP (Open)

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Line Horse
The Merciful
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
3 / 9
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    Stop The Traffic     4    57.5    1    0.00     8.0   63    47           63    +0
2    Gold De Grace        4    51.0    2    1.00     8.0   58    39           48    -10
3    The Merciful         5    51.5    3    1.70     0.0   56    56           56    +0
4    Rosy Lemon           5    56.5    4    4.00     0.0   69    63           63    -6
5    Hat Furious          4    55.5    5    4.50     8.0   59    44           49    -10
6    Cartagena            4    59.5    6    4.60     8.0   67    52           57    -10
7    Silver Flare         4    50.0    7    10.00    8.0   56    32           46    -10
8    Pomozelous           3    59.5    8    10.40    10.5  67    46           57    -10
9    Count Your Chances   5    49.5    9    10.90    0.0   55    47           47    -8
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Stop The Traffic 63 65 63 +2 8.0 -
2 Gold De Grace 58 51 48 +3 8.0 -
3 The Merciful Line 56 54 56 -2 0.0
4 Rosy Lemon 69 72 63 +9 0.0 -
5 Hat Furious 59 53 49 +4 8.0 -
6 Cartagena 67 77 57 +20 8.0 -
7 Silver Flare 56 64 46 +18 8.0 -
8 Pomozelous 67 62 57 +5 10.5 -
9 Count Your Chances 55 51 47 +4 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