Official NHA Assessment

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

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Line Horse
Coffee In Brazil
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
2 / 7
Within 2 points
Significant Diffs
4 / 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    I'm A Man            2    60.0    1    0.00     0.0   64    64           64    +0
2    Holocene             4    56.5    2    0.30     0.5   -     61           61    +61
3    Count Your Chances   5    57.0    3    3.25     0.0   65    60           60    -5
4    Coffee In Brazil     3    57.0    4    3.50     1.5   56    56           56    +0
5    Double Joy           2    57.0    5    5.25     0.0   40    58           58    +18
6    Misava               3    57.0    6    17.00    1.5   59    55           55    -4
99   Felidavian           3    60.0    99   0.00     1.5   -     61           61    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 I'm A Man 64 69 64 +5 0.0 -
2 Holocene - 76 61 +15 0.5 -
3 Count Your Chances 65 51 60 -9 0.0 -
4 Coffee In Brazil Line 56 49 56 -7 1.5
5 Double Joy 40 44 58 -14 0.0 -
6 Misava 59 53 55 -2 1.5 -
99 Felidavian - 60 61 -1 1.5 -
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