Official NHA Assessment

Race 4: AHA HOTELS & LODGES MR 78 HANDICAP (Open)

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Line Horse
Bristol Hercules
Reference for assessment
Exact Matches
2 / 14
Calculated = Official
Close Matches
5 / 14
Within 2 points
Significant Diffs
4 / 14
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    Spelling Bee         2    61.5    1    0.00     0.0   85    82           85    +0
2    Lucky Dollar         2    60.0    2    1.90     0.0   78    82           82    +4
3    Bristol Hercules     2    60.0    3    2.10     0.0   82    82           82    +0
4    Down By The River    2    59.5    4    2.25     0.0   81    81           81    +0
5    Master Of Destiny    8    60.0    5    3.65     0.0   78    80           80    +2
6    Moola Man            4    58.5    6    3.80     0.5   79    76           76    -3
7    Madison Valley       4    60.0    7    4.10     0.5   82    79           79    -3
8    Sweeper Keeper       4    56.0    8    5.10     0.5   74    70           70    -4
9    Aberdeen             2    57.5    9    5.50     0.0   77    74           74    -3
10   Attaboy              2    52.5    10   5.80     0.0   75    64           65    -10
11   Teichman             5    58.0    11   8.30     0.0   74    75           75    +1
12   Basie Raakvat        4    55.0    12   9.90     0.5   72    68           68    -4
13   Nightjar             3    59.5    13   10.80    2.0   81    74           74    -7
14   Canford Ice          2    60.0    14   25.60    0.0   82    79           79    -3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Spelling Bee 85 86 85 +1 0.0 -
2 Lucky Dollar 78 85 82 +3 0.0 -
3 Bristol Hercules Line 82 87 82 +5 0.0
4 Down By The River 81 95 81 +14 0.0 -
5 Master Of Destiny 78 73 80 -7 0.0 -
6 Moola Man 79 75 76 -1 0.5 -
7 Madison Valley 82 116 79 +37 0.5 -
8 Sweeper Keeper 74 67 70 -3 0.5 -
9 Aberdeen 77 74 74 ✓ Match 0.0 -
10 Attaboy 75 65 65 ✓ Match 0.0 -
11 Teichman 74 73 75 -2 0.0 -
12 Basie Raakvat 72 63 68 -5 0.5 -
13 Nightjar 81 67 74 -7 2.0 -
14 Canford Ice 82 82 79 +3 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