Official NHA Assessment

Race 5: FOLLOW TAB SOUTH AFRICA ON SOCIAL MEDIA MR 80 HANDICAP (Open)

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Line Horse
Machete Man
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
8 / 10
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    Mucho Dinero         2    53.5    1    0.00     0.0   81    79           81    +0
2    Cosmic Event         5    52.0    2    1.00     0.0   75    80           80    +5
3    Machete Man          2    52.0    3    2.75     0.0   78    78           78    +0
4    Silent War           3    57.5    4    3.50     7.0   76    74           74    -2
5    Thunder Master       6    60.0    5    5.00     0.0   81    92           92    +11
6    Professor Snape      2    55.0    6    5.50     0.0   84    82           82    -2
7    Dowser               5    59.0    7    5.55     0.0   92    90           90    -2
8    San Quintin          6    55.5    8    6.55     0.0   72    83           83    +11
9    Aurora Storm         2    56.5    9    9.05     0.0   87    85           85    -2
10   Winter Air           3    53.5    10   13.80    7.0   68    65           65    -3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Mucho Dinero 81 115 81 +34 0.0 -
2 Cosmic Event 75 70 80 -10 0.0 -
3 Machete Man Line 78 90 78 +12 0.0
4 Silent War 76 91 74 +17 7.0 -
5 Thunder Master 81 80 92 -12 0.0 -
6 Professor Snape 84 68 82 -14 0.0 -
7 Dowser 92 84 90 -6 0.0 -
8 San Quintin 72 58 83 -25 0.0 -
9 Aurora Storm 87 84 85 -1 0.0 -
10 Winter Air 68 62 65 -3 7.0 -
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