Official NHA Assessment

Race 2: Call now! Or play online. www.trackandball.co.za QUALIFIED MAIDEN PLATE (Maidens with 3 runs or more & gross rating of 6

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Line Horse
Barbatti
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
2 / 7
Within 2 points
Significant Diffs
4 / 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    Ebony Bay            3    57.5    1    0.00     6.0   58    52           52    -6
2    L'Ultimo             2    56.5    2    0.20     0.0   68    62           62    -6
3    Barbatti             3    60.0    3    2.40     6.0   59    59           59    +0
4    Grand Finale         2    59.0    4    5.10     0.0   55    67           67    +12
5    Izuizorizuaint       2    56.5    5    11.30    0.0   71    62           62    -9
6    Brainwave            2    59.0    6    18.90    0.0   58    67           67    +9
99   Vorticity            4    60.0    99   0.00     3.0   -     63           63    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Ebony Bay 58 50 52 -2 6.0 -
2 L'Ultimo 68 61 62 -1 0.0 -
3 Barbatti Line 59 47 59 -12 6.0
4 Grand Finale 55 62 67 -5 0.0 -
5 Izuizorizuaint 71 56 62 -6 0.0 -
6 Brainwave 58 58 67 -9 0.0 -
99 Vorticity - 38 63 -25 3.0 -
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