Official NHA Assessment

Race 7: ECONO AGRI 100 (PTY) LTD MR 80 HANDICAP (Open)

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Line Horse
Alingalonga
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
3 / 8
Within 2 points
Significant Diffs
4 / 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    Silver Tycoon        7    54.0    1    0.00     0.0   68    79           68    +0
2    Eyjafjallajokull     2    57.0    2    0.05     0.0   74    85           85    +11
3    Alingalonga          4    61.5    3    3.30     6.0   83    83           83    +0
4    Timbavati River      3    58.5    4    4.55     8.5   77    71           71    -6
5    American Dream       3    56.0    5    5.30     8.5   72    66           66    -6
6    Scampton             2    56.5    6    5.40     0.0   74    84           84    +10
7    Atkinson Grimshaw    4    58.0    7    5.90     6.0   76    75           75    -1
8    Final Edition        5    56.0    8    8.40     0.0   72    83           83    +11
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Silver Tycoon 68 74 68 +6 0.0 -
2 Eyjafjallajokull 74 86 85 +1 0.0 -
3 Alingalonga Line 83 82 83 -1 6.0
4 Timbavati River 77 79 71 +8 8.5 -
5 American Dream 72 81 66 +15 8.5 -
6 Scampton 74 70 84 -14 0.0 -
7 Atkinson Grimshaw 76 75 75 ✓ Match 6.0 -
8 Final Edition 72 78 83 -5 0.0 -
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