Official NHA Assessment

Race 1: BETWAY WELCOMES YOU MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
The Octagon
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
1 / 6
Within 2 points
Significant Diffs
3 / 6
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    The Octagon          2    60.0    1    0.00     0.0   71    71           71    +0
2    Jabberwocky          4    60.0    2    0.20     5.0   -     61           61    +61
3    Obsidian             3    58.0    3    4.60     8.0   -     51           51    +51
4    Cliffie Clavin       3    58.0    4    6.90     8.0   70    51           60    -10
5    Ballarino            3    57.5    5    17.15    8.0   54    50           50    -4
99   Despina              4    57.0    99   0.00     5.0   -     55           55    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 The Octagon Line 71 76 71 +5 0.0
2 Jabberwocky - 53 61 -8 5.0 -
3 Obsidian - 97 51 +46 8.0 -
4 Cliffie Clavin 70 57 60 -3 8.0 -
5 Ballarino 54 49 50 -1 8.0 -
99 Despina - - 55 -55 5.0 -
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