Official NHA Assessment

Race 8: 4RACING THANKS & APPRECIATES JOHAN JANSE VAN VUUREN STABLE MR 82 HANDICAP (Open)

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Line Horse
Tayooba
Reference for assessment
Exact Matches
2 / 11
Calculated = Official
Close Matches
3 / 11
Within 2 points
Significant Diffs
6 / 11
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    Captain Hindsight    5    60.0    1    0.00     0.0   82    86           82    +0
2    Power Broker         2    59.0    2    0.75     1.0   82    82           82    +0
3    Tayooba              2    57.0    3    2.50     1.0   78    78           78    +0
4    Pinch Hit            2    58.5    4    2.75     1.0   81    81           81    +0
5    Twice The Storm      2    57.5    5    3.75     1.0   84    79           79    -5
6    San Marzano          3    54.0    6    5.50     2.0   72    70           70    -2
7    Pontiac              3    59.5    7    5.55     2.0   83    81           81    -2
8    Kalahari Blue        2    58.0    8    7.25     1.0   80    80           80    +0
9    Stormy Seas          4    58.0    9    8.25     2.5   78    77           77    -1
10   Princess Nicole      5    61.0    10   24.25    0.0   84    88           88    +4
99   Strike A Match       2    56.0    99   0.00     1.0   -     76           76    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Captain Hindsight 82 112 82 +30 0.0 -
2 Power Broker 82 102 82 +20 1.0 -
3 Tayooba Line 78 68 78 -10 1.0
4 Pinch Hit 81 74 81 -7 1.0 -
5 Twice The Storm 84 73 79 -6 1.0 -
6 San Marzano 72 53 70 -17 2.0 -
7 Pontiac 83 79 81 -2 2.0 -
8 Kalahari Blue 80 75 80 -5 1.0 -
9 Stormy Seas 78 77 77 ✓ Match 2.5 -
10 Princess Nicole 84 84 88 -4 0.0 -
99 Strike A Match - 76 76 ✓ Match 1.0 -
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