Official NHA Assessment

Race 4: WWW.TAB4RACING.COM MR 80 HANDICAP (Open)

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Line Horse
Kalahari Blue
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
5 / 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    Arbitrator           2    56.5    1    0.00     3.5   80    80           80    +0
2    South Boy (ARG)      4    56.0    2    0.25     6.0   72    74           74    +2
3    Angel Of War         3    55.5    3    0.50     5.0   74    75           75    +1
4    Kalahari Blue        2    57.5    4    0.60     3.5   82    82           82    +0
5    Ramchandani Road     5    56.0    5    2.25     0.0   72    86           86    +14
6    Spielberg            3    59.0    6    2.50     5.0   78    82           82    +4
7    Frontline Fighter    3    58.0    7    8.00     5.0   84    80           80    -4
8    Mescal               2    55.0    8    13.00    3.5   77    77           77    +0
9    Another Thief        3    59.0    9    15.00    5.0   78    82           82    +4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Arbitrator 80 82 80 +2 3.5 -
2 South Boy (ARG) 72 71 74 -3 6.0 -
3 Angel Of War 74 83 75 +8 5.0 -
4 Kalahari Blue Line 82 75 82 -7 3.5
5 Ramchandani Road 72 67 86 -19 0.0 -
6 Spielberg 78 75 82 -7 5.0 -
7 Frontline Fighter 84 82 80 +2 5.0 -
8 Mescal 77 64 77 -13 3.5 -
9 Another Thief 78 78 82 -4 5.0 -
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