Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY MAIDEN PLATE (F & M) (For Maiden (F&M) R15 000 Win Bonus ROA Members)

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Line Horse
Bella Attrice
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
9 / 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    The Lady Love        2    58.0    1    0.00     7.0   69    69           69    +0
2    Fire Chaser          2    58.0    2    0.25     7.0   67    69           69    +2
3    My Mistress          4    60.0    3    2.25     12.0  -     63           63    +63
4    Bella Attrice        2    58.0    4    3.00     7.0   69    69           69    +0
5    Dumisani             5    60.0    5    5.50     0.0   -     87           87    +87
6    Mauna Loa            2    58.0    6    5.75     7.0   -     69           69    +69
7    Mia Ragazza          4    60.0    7    6.50     12.0  -     63           63    +63
8    Fuel The Frenzy      4    60.0    8    9.00     12.0  -     63           63    +63
9    Ursern Valley        2    58.0    9    9.50     7.0   -     69           69    +69
99   For The Boytjies     4    60.0    99   0.00     12.0  -     63           63    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 The Lady Love 69 63 69 -6 7.0 -
2 Fire Chaser 67 52 69 -17 7.0 -
3 My Mistress - 40 63 -23 12.0 -
4 Bella Attrice Line 69 66 69 -3 7.0
5 Dumisani - 60 87 -27 0.0 -
6 Mauna Loa - 56 69 -13 7.0 -
7 Mia Ragazza - 50 63 -13 12.0 -
8 Fuel The Frenzy - 34 63 -29 12.0 -
9 Ursern Valley - 45 69 -24 7.0 -
99 For The Boytjies - - 63 -63 12.0 -
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