Official NHA Assessment

Race 7: PERPETUA HOUSE MR 80 HANDICAP (Open)

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Line Horse
Beerenberg
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
1 / 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    Ragnar Lothbrok      3    57.5    1    0.00     10.5  75    81           75    +0
2    Beerenberg           2    55.5    2    4.25     7.0   84    84           84    +0
3    Bonanza              3    59.0    3    5.50     10.5  78    84           84    +6
4    Kimball O'Hara       2    58.0    4    5.90     7.0   90    89           89    -1
5    La Vida              3    56.0    5    6.65     10.5  71    78           78    +7
6    Ciollum's Delight    4    54.0    6    8.90     12.0  68    71           71    +3
7    Wordsworth           7    52.0    7    9.30     0.0   64    91           91    +27
8    Skidoo               6    60.5    8    9.60     0.0   81    108          108   +27
9    Magnetic Dime        4    55.5    9    12.85    12.0  71    74           74    +3
10   Persistance          3    55.5    10   13.25    10.5  71    77           77    +6
11   Baltimore Jack       5    56.5    11   19.50    0.0   73    100          100   +27
99   On The Road Again    3    57.0    99   0.00     10.5  -     80           80    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Ragnar Lothbrok 75 81 75 +6 10.5 -
2 Beerenberg Line 84 76 84 -8 7.0
3 Bonanza 78 57 84 -27 10.5 -
4 Kimball O'Hara 90 61 89 -28 7.0 -
5 La Vida 71 64 78 -14 10.5 -
6 Ciollum's Delight 68 61 71 -10 12.0 -
7 Wordsworth 64 65 91 -26 0.0 -
8 Skidoo 81 73 108 -35 0.0 -
9 Magnetic Dime 71 78 74 +4 12.0 -
10 Persistance 71 50 77 -27 10.5 -
11 Baltimore Jack 73 72 100 -28 0.0 -
99 On The Road Again - 79 80 -1 10.5 -
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