Official NHA Assessment

Race 1: 4RACING WELCOMES YOU MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Vibe Sa
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
10 / 10
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    Halcyon              3    57.0    1    0.00     2.5   -     75           6     +6
2    Vibe Sa              2    60.0    2    0.30     1.5   83    83           83    +0
3    Mohave Man           2    60.0    3    9.00     1.5   69    83           83    +14
4    Asian Delight        2    57.0    4    10.75    1.5   -     77           77    +77
5    Cockey Walk          2    57.0    5    12.50    1.5   -     77           77    +77
6    Summer Shade         4    56.0    6    22.75    0.0   62    78           78    +16
7    Lake Kivu            3    60.0    7    26.00    2.5   -     81           81    +81
8    Ballarino            3    60.0    8    99.99    2.5   -     81           81    +81
99   Flight Engineer      3    57.0    99   0.00     2.5   -     75           75    +0
99   Pressonregardless    4    60.0    99   0.00     0.0   -     86           86    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Halcyon - 72 6 +66 2.5 -
2 Vibe Sa Line 83 92 83 +9 1.5
3 Mohave Man 69 60 83 -23 1.5 -
4 Asian Delight - 61 77 -16 1.5 -
5 Cockey Walk - - 77 -77 1.5 -
6 Summer Shade 62 52 78 -26 0.0 -
7 Lake Kivu - 30 81 -51 2.5 -
8 Ballarino - 49 81 -32 2.5 -
99 Flight Engineer - 58 75 -17 2.5 -
99 Pressonregardless - 109 86 +23 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