Official NHA Assessment

Race 10: THE INDEPENDENT ON SATURDAY MR 80 HANDICAP (Open)

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Line Horse
African Dusk
Reference for assessment
Exact Matches
1 / 15
Calculated = Official
Close Matches
2 / 15
Within 2 points
Significant Diffs
8 / 15
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    Tirpitz              6    58.0    1    0.00     0.0   76    79           76    +0
2    Captain Rocket       3    55.0    2    3.50     2.0   74    70           70    -4
3    African Dusk         5    57.5    3    4.10     0.0   79    79           79    +0
4    Sequoia              6    59.5    4    5.40     0.0   79    82           82    +3
5    Time Taker           4    55.0    5    5.60     0.5   70    72           72    +2
6    Fine Admiral         3    54.0    6    5.90     2.0   75    67           67    -8
7    Beyondtheboundary    3    62.5    7    6.30     2.0   85    84           84    -1
8    Teichman             5    57.5    8    6.60     0.0   75    78           78    +3
9    Pirate Prince        2    58.5    9    6.85     0.0   81    80           80    -1
10   Cherokee Trail       2    60.5    10   7.65     0.0   85    84           84    -1
11   The Bund             2    55.5    11   8.40     0.0   78    74           74    -4
12   Dowser               5    60.5    12   8.60     0.0   90    84           84    -6
13   Temperate Zone       2    57.0    13   10.50    0.0   78    77           77    -1
14   Imperial Order       3    57.0    14   27.10    2.0   78    73           73    -5
99   Rosh Kedesh          5    58.0    99   0.00     0.0   -     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 Tirpitz 76 82 76 +6 0.0 -
2 Captain Rocket 74 82 70 +12 2.0 -
3 African Dusk Line 79 83 79 +4 0.0
4 Sequoia 79 99 82 +17 0.0 -
5 Time Taker 70 55 72 -17 0.5 -
6 Fine Admiral 75 73 67 +6 2.0 -
7 Beyondtheboundary 85 72 84 -12 2.0 -
8 Teichman 75 73 78 -5 0.0 -
9 Pirate Prince 81 94 80 +14 0.0 -
10 Cherokee Trail 85 86 84 +2 0.0 -
11 The Bund 78 69 74 -5 0.0 -
12 Dowser 90 84 84 ✓ Match 0.0 -
13 Temperate Zone 78 74 77 -3 0.0 -
14 Imperial Order 78 78 73 +5 2.0 -
99 Rosh Kedesh - 88 79 +9 0.0 -
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