Official NHA Assessment

Race 1: 4RACING WELCOMES YOU MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Secret Chord
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
0 / 12
Within 2 points
Significant Diffs
10 / 12
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    Ethanator            2    60.0    1    0.00     5.0   84    87           87    +3
2    Secret Chord         4    60.0    2    0.75     9.0   79    79           79    +0
3    Glawari              2    57.5    3    2.25     5.0   72    82           82    +10
4    Smashing             4    56.0    4    2.50     9.0   -     71           71    +71
5    Sea Shanty           4    58.5    5    3.00     9.0   -     76           76    +76
6    Enchanting Lady      2    57.5    6    3.25     5.0   -     82           82    +82
7    Knockemstiff         2    60.0    7    6.50     5.0   75    87           87    +12
8    Kiss The Magic       3    53.5    8    7.50     7.5   -     69           69    +69
9    Sakhala Is'Cathulo   3    60.0    9    10.50    7.5   -     82           82    +82
10   Im A Blondie         2    57.5    10   16.75    5.0   -     82           82    +82
11   Compact Power        3    53.5    11   19.25    7.5   -     69           69    +69
99   Magical Stones       3    58.5    99   0.00     7.5   -     79           79    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Ethanator 84 82 87 -5 5.0 -
2 Secret Chord Line 79 92 79 +13 9.0
3 Glawari 72 65 82 -17 5.0 -
4 Smashing - 78 71 +7 9.0 -
5 Sea Shanty - 71 76 -5 9.0 -
6 Enchanting Lady - 67 82 -15 5.0 -
7 Knockemstiff 75 65 87 -22 5.0 -
8 Kiss The Magic - 59 69 -10 7.5 -
9 Sakhala Is'Cathulo - 66 82 -16 7.5 -
10 Im A Blondie - 36 82 -46 5.0 -
11 Compact Power - 25 69 -44 7.5 -
99 Magical Stones - 46 79 -33 7.5 -
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