Official NHA Assessment

Race 1: 4RACING WELCOMES YOU WORK RIDERS MAIDEN PLATE (F & M) (For Maiden F&M. R15 000 Win bonus ROA Members)

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Line Horse
Cat O'clock
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
1 / 11
Within 2 points
Significant Diffs
10 / 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    Cat O'clock          3    60.0    1    0.00     7.0   71    71           71    +0
2    Bella Boop Boop      3    58.0    2    8.75     7.0   61    67           67    +6
3    Like A Butterfly     3    60.0    3    12.00    7.0   65    71           71    +6
4    Bella's Charm        3    58.0    4    13.50    7.0   72    67           67    -5
5    Jilted               2    58.5    5    15.50    0.0   79    82           82    +3
6    Paris Party          3    58.5    6    18.25    7.0   -     68           68    +68
7    Emerald Gold         4    60.5    7    18.75    4.5   -     77           77    +77
8    Mischief Managed     3    58.0    8    18.95    7.0   -     67           67    +67
9    Hubbly Bubbly        3    58.5    9    19.00    7.0   -     68           68    +68
10   Kivuli               3    56.5    10   24.25    7.0   -     64           64    +64
11   Sweet Sophia         3    58.0    11   27.75    7.0   -     67           67    +67
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Cat O'clock Line 71 71 71 ✓ Match 7.0
2 Bella Boop Boop 61 58 67 -9 7.0 -
3 Like A Butterfly 65 54 71 -17 7.0 -
4 Bella's Charm 72 59 67 -8 7.0 -
5 Jilted 79 65 82 -17 0.0 -
6 Paris Party - 56 68 -12 7.0 -
7 Emerald Gold - 34 77 -43 4.5 -
8 Mischief Managed - - 67 -67 7.0 -
9 Hubbly Bubbly - - 68 -68 7.0 -
10 Kivuli - 41 64 -23 7.0 -
11 Sweet Sophia - 58 67 -9 7.0 -
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