Official NHA Assessment

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

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Line Horse
Master Of Defense
Reference for assessment
Exact Matches
2 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
6 / 11
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    Give Us A Smile      2    59.0    1    0.00     0.0   74    67           67    -7
2    Mo Flow              3    59.0    2    0.05     5.0   63    57           57    -6
3    Master Of Defense    3    60.0    3    0.10     5.0   59    59           59    +0
4    Regazzo Grande       2    59.0    4    0.60     0.0   63    72           72    +9
5    Jet Bund             2    56.5    5    2.85     0.0   79    64           69    -10
6    Shunmyo              3    60.0    6    8.35     5.0   47    59           59    +12
7    Countessofthestars   2    56.0    7    8.40     0.0   45    61           61    +16
8    Slainte Mhath        4    59.0    8    13.15    2.5   61    62           62    +1
9    Thunder Force        3    59.0    9    45.40    5.0   -     57           57    +57
99   Gangster Boss        3    60.0    99   0.00     5.0   -     59           59    +0
99   Duke Orsino          3    59.0    99   0.00     5.0   -     57           57    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Give Us A Smile 74 67 67 ✓ Match 0.0 -
2 Mo Flow 63 66 57 +9 5.0 -
3 Master Of Defense Line 59 63 59 +4 5.0
4 Regazzo Grande 63 72 72 ✓ Match 0.0 -
5 Jet Bund 79 64 69 -5 0.0 -
6 Shunmyo 47 45 59 -14 5.0 -
7 Countessofthestars 45 40 61 -21 0.0 -
8 Slainte Mhath 61 81 62 +19 2.5 -
9 Thunder Force - 10 57 -47 5.0 -
99 Gangster Boss - 55 59 -4 5.0 -
99 Duke Orsino - 10 57 -47 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