Official NHA Assessment

Race 4: TABONLINE.CO.ZA MR 95 HANDICAP (Open)

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Line Horse
Sabina's Prodigy
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
3 / 7
Within 2 points
Significant Diffs
2 / 7
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    Somerset Maugham     4    60.0    1    0.00     2.5   95    92           95    +0
2    Kaptein              4    55.5    2    0.40     2.5   86    88           88    +2
3    Sabina's Prodigy     4    56.0    3    1.40     2.5   87    87           87    +0
4    Lion's Head          4    57.0    4    1.70     2.5   89    89           89    +0
5    Kariba Hall          4    56.5    5    2.00     2.5   88    88           88    +0
6    Red Lark             4    58.0    6    3.75     2.5   91    89           89    -2
99   Izapha               4    54.5    99   0.00     2.5   -     81           81    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Somerset Maugham 95 97 95 +2 2.5 -
2 Kaptein 86 80 88 -8 2.5 -
3 Sabina's Prodigy Line 87 91 87 +4 2.5
4 Lion's Head 89 84 89 -5 2.5 -
5 Kariba Hall 88 86 88 -2 2.5 -
6 Red Lark 91 88 89 -1 2.5 -
99 Izapha - 74 81 -7 2.5 -
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