Official NHA Assessment

Race 1: 4RACING WELCOMES YOU 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
2 / 11
Within 2 points
Significant Diffs
7 / 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    Miss Lia             3    59.0    1    0.00     8.5   -     69           6     +6
2    Sonic Jet            3    59.0    2    0.75     8.5   79    69           69    -10
3    Cat O'clock          3    60.0    3    2.75     8.5   71    71           71    +0
4    Mocha Macaroon       4    60.0    4    7.00     10.0  73    68           68    -5
5    Winter Miracle       3    59.0    5    10.75    8.5   -     69           69    +69
6    Artic Silver         3    59.0    6    11.00    8.5   -     69           69    +69
7    Shamoon              3    59.0    7    13.75    8.5   -     69           69    +69
8    Diamond Dash         2    59.0    8    18.00    5.5   54    75           75    +21
9    Chilli Marmalade     5    60.0    9    22.00    0.0   51    88           88    +37
10   Radiant Heat         3    56.5    10   22.50    8.5   78    64           68    -10
11   Fan The Flame        3    59.0    11   34.00    8.5   -     69           69    +69
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Miss Lia - 95 6 +89 8.5 -
2 Sonic Jet 79 101 69 +32 8.5 -
3 Cat O'clock Line 71 71 71 ✓ Match 8.5
4 Mocha Macaroon 73 72 68 +4 10.0 -
5 Winter Miracle - 60 69 -9 8.5 -
6 Artic Silver - 77 69 +8 8.5 -
7 Shamoon - 67 69 -2 8.5 -
8 Diamond Dash 54 61 75 -14 5.5 -
9 Chilli Marmalade 51 48 88 -40 0.0 -
10 Radiant Heat 78 72 68 +4 8.5 -
11 Fan The Flame - - 69 -69 8.5 -
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