Official NHA Assessment

Race 9: TAB 4RACING APP MR 74 HANDICAP (Open)

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Line Horse
Nkandla Gold
Reference for assessment
Exact Matches
3 / 8
Calculated = Official
Close Matches
4 / 8
Within 2 points
Significant Diffs
2 / 8
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    Pivotal Role         3    61.0    1    0.00     3.5   81    77           81    +0
2    Blindfire            2    55.5    2    0.90     2.5   78    68           68    -10
3    Sergeant Soqrat      2    57.0    3    2.10     2.5   73    71           71    -2
4    Nkandla Gold         4    54.5    4    2.30     4.0   63    63           63    +0
5    Oriental Bouquet     4    49.5    5    2.35     4.0   55    53           53    -2
6    Palace Revolt        2    56.0    6    2.40     2.5   66    69           69    +3
7    Tiger Storm          3    57.5    7    7.90     3.5   69    70           70    +1
99   Inafix               4    57.5    99   0.00     4.0   -     69           69    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Pivotal Role 81 87 81 +6 3.5 -
2 Blindfire 78 81 68 +13 2.5 -
3 Sergeant Soqrat 73 71 71 ✓ Match 2.5 -
4 Nkandla Gold Line 63 63 63 ✓ Match 4.0
5 Oriental Bouquet 55 56 53 +3 4.0 -
6 Palace Revolt 66 64 69 -5 2.5 -
7 Tiger Storm 69 69 70 -1 3.5 -
99 Inafix - 69 69 ✓ Match 4.0 -
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