Official NHA Assessment

Race 6: PERFECTLY PLACED CAPE C STAKES (For All Horses with a nett rating of 74 & below)

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Line Horse
Twice The Master
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
4 / 10
Within 2 points
Significant Diffs
3 / 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    Marshall Field       3    61.5    1    0.00     4.5   74    68           68    -6
2    Twice The Master     3    54.0    2    2.25     4.5   58    58           58    +0
3    African Torrent      2    60.0    3    6.00     0.0   70    74           74    +4
4    Ignatius             2    61.5    4    7.50     0.0   74    77           77    +3
5    Lord Fyfield         2    54.0    5    8.75     0.0   68    62           62    -6
6    Heliotrope           3    54.5    6    10.75    4.5   76    54           66    -10
7    Mohandas             3    61.5    7    14.50    4.5   73    68           68    -5
8    Spring Flyer         3    54.0    8    16.00    4.5   67    53           57    -10
9    Ozark                4    55.5    9    18.50    1.5   69    62           62    -7
10   Exceeder             4    55.5    10   20.00    1.5   61    62           62    +1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Marshall Field 74 77 68 +9 4.5 -
2 Twice The Master Line 58 58 58 ✓ Match 4.5
3 African Torrent 70 68 74 -6 0.0 -
4 Ignatius 74 70 77 -7 0.0 -
5 Lord Fyfield 68 65 62 +3 0.0 -
6 Heliotrope 76 67 66 +1 4.5 -
7 Mohandas 73 64 68 -4 4.5 -
8 Spring Flyer 67 56 57 -1 4.5 -
9 Ozark 69 61 62 -1 1.5 -
10 Exceeder 61 59 62 -3 1.5 -
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