Official NHA Assessment

Race 3: www.tabgold.co.za QUALIFIED MAIDEN PLATE (Maidens with 3 runs or more & gross rating of 68 or less)

Back to Race
Line Horse
Hallerbos
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
9 / 10
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Hallerbos            3    60.0    1    0.00     8.5   64    64           64    +0
2    Barbatti             3    60.0    2    4.00     8.5   56    65           65    +9
3    Royal Venus          2    53.0    3    6.10     0.0   60    67           67    +7
4    Captain Marvel       3    57.5    4    6.85     8.5   61    59           59    -2
5    Creator              3    60.0    5    7.45     8.5   60    64           64    +4
6    Chopsticks           3    57.5    6    7.55     8.5   67    59           59    -8
7    Star Rated           3    60.0    7    12.95    8.5   42    64           64    +22
8    Virtual Image        3    53.5    8    26.15    8.5   40    51           51    +11
99   Flying Wonder        3    60.0    99   0.00     8.5   -     64           64    +0
99   Not Your Call        3    60.0    99   0.00     8.5   -     64           64    +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Hallerbos Line 64 57 64 -7 8.5
2 Barbatti 56 47 65 -18 8.5 -
3 Royal Venus 60 50 67 -17 0.0 -
4 Captain Marvel 61 49 59 -10 8.5 -
5 Creator 60 46 64 -18 8.5 -
6 Chopsticks 67 59 59 ✓ Match 8.5 -
7 Star Rated 42 38 64 -26 8.5 -
8 Virtual Image 40 30 51 -21 8.5 -
99 Flying Wonder - 52 64 -12 8.5 -
99 Not Your Call - 52 64 -12 8.5 -
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