Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY RACING MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Rhythm Of The Rain
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
7 / 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    Back To Formentera   3    60.0    1    0.00     10.5  56    67           62    +6
2    Rhythm Of The Rain   3    60.0    2    0.75     10.5  67    67           67    +0
3    Mia Calice           2    58.0    3    2.00     7.0   56    70           70    +14
4    Girl Scout           3    60.0    4    3.25     10.5  53    67           67    +14
5    Babyitscoldoutside   3    60.0    5    4.25     10.5  56    67           67    +11
6    Wonder Woman         6    60.0    6    5.25     0.0   48    88           88    +40
7    Chasing Heart        3    60.0    7    5.50     10.5  48    67           67    +19
8    Peronzada            3    60.0    8    12.50    10.5  43    67           67    +24
9    Bold Leah            4    60.0    9    12.75    12.0  47    64           64    +17
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Back To Formentera 56 60 62 -2 10.5 -
2 Rhythm Of The Rain Line 67 70 67 +3 10.5
3 Mia Calice 56 60 70 -10 7.0 -
4 Girl Scout 53 54 67 -13 10.5 -
5 Babyitscoldoutside 56 56 67 -11 10.5 -
6 Wonder Woman 48 43 88 -45 0.0 -
7 Chasing Heart 48 44 67 -23 10.5 -
8 Peronzada 43 56 67 -11 10.5 -
9 Bold Leah 47 40 64 -24 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