Official NHA Assessment

Race 7: BETONTAB.CO.ZA MIDDLE STAKES (For horses with nett rating of 101 and below)

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Line Horse
Sheldon
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
7 / 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    Godswood             4    62.0    1    0.00     4.0   98    91           91    -7
2    Sheldon              6    62.0    2    1.75     0.0   99    99           99    +0
3    Lucy English         3    58.5    3    2.25     3.5   92    85           85    -7
3    Super Agra           4    56.0    3    2.25     4.0   85    79           79    -6
5    Herecomestherain     4    58.0    5    3.00     4.0   87    83           83    -4
6    Double Magic         3    55.0    6    3.05     3.5   80    78           78    -2
7    Siberian Steel       3    52.0    7    7.00     3.5   80    72           72    -8
99   Big Eyed Girl        3    54.5    99   0.00     3.5   -     77           77    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Godswood 98 106 91 +15 4.0 -
2 Sheldon Line 99 106 99 +7 0.0
3 Lucy English 92 90 85 +5 3.5 -
3 Super Agra 85 60 79 -19 4.0 -
5 Herecomestherain 87 55 83 -28 4.0 -
6 Double Magic 80 72 78 -6 3.5 -
7 Siberian Steel 80 80 72 +8 3.5 -
99 Big Eyed Girl - 96 77 +19 3.5 -
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