Official NHA Assessment

Race 3: TAB 4RACING APP OPEN MAIDEN (For Maiden R15 000 Win Bonus ROA Members)

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Line Horse
Belle's First Wave
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
6 / 9
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    Gold For Africa      3    57.5    1    0.00     1.5   65    51           51    -14
2    Twice A Saint        2    55.0    2    1.50     0.0   55    54           54    -1
3    Wolfram              3    60.0    3    1.55     1.5   65    61           61    -4
4    Belle's First Wave   3    54.5    4    2.05     1.5   50    50           50    +0
5    Master Of Defense    3    59.0    5    2.15     1.5   63    59           59    -4
6    Afrodite             3    55.0    6    5.40     1.5   60    46           50    -10
7    Happiness Is         3    53.5    7    19.65    1.5   39    43           43    +4
8    Natasha Rostov       3    53.5    8    43.90    1.5   53    43           43    -10
99   Mohandas             3    59.0    99   0.00     1.5   -     54           54    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Gold For Africa 65 68 51 +17 1.5 -
2 Twice A Saint 55 64 54 +10 0.0 -
3 Wolfram 65 59 61 -2 1.5 -
4 Belle's First Wave Line 50 51 50 +1 1.5
5 Master Of Defense 63 63 59 +4 1.5 -
6 Afrodite 60 56 50 +6 1.5 -
7 Happiness Is 39 29 43 -14 1.5 -
8 Natasha Rostov 53 53 43 +10 1.5 -
99 Mohandas - 64 54 +10 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