Official NHA Assessment

Race 3: GREYVILLE CONVENTION CENTRE MR 66 HANDICAP (Open)

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Line Horse
Seattle Beat
Reference for assessment
Exact Matches
2 / 12
Calculated = Official
Close Matches
5 / 12
Within 2 points
Significant Diffs
3 / 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    Jetavana             3    59.5    1    0.00     1.0   65    62           65    +0
2    Brave Voyager        3    54.0    2    0.25     1.0   54    51           51    -3
3    Seattle Beat         4    58.5    3    2.85     0.5   63    63           63    +0
4    Exceed Expectation   3    54.0    4    3.00     1.0   54    53           53    -1
5    Oh My Word Its Roy   3    52.0    5    3.05     1.0   49    49           49    +0
6    Porfirio             6    54.5    6    4.15     0.0   55    55           55    +0
7    We All Chomies       5    52.0    7    5.05     0.0   50    49           49    -1
8    Barbatti             3    53.5    8    6.35     1.0   52    50           50    -2
9    In The Summertime    3    60.0    9    6.65     1.0   66    63           63    -3
10   Fever                5    55.0    10   6.85     0.0   56    55           55    -1
11   Final Destiny        4    52.0    11   8.05     0.5   50    48           48    -2
12   Ravens Sword         3    59.5    12   8.65     1.0   65    62           62    -3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Jetavana 65 65 65 ✓ Match 1.0 -
2 Brave Voyager 54 51 51 ✓ Match 1.0 -
3 Seattle Beat Line 63 55 63 -8 0.5
4 Exceed Expectation 54 52 53 -1 1.0 -
5 Oh My Word Its Roy 49 50 49 +1 1.0 -
6 Porfirio 55 88 55 +33 0.0 -
7 We All Chomies 50 54 49 +5 0.0 -
8 Barbatti 52 47 50 -3 1.0 -
9 In The Summertime 66 66 63 +3 1.0 -
10 Fever 56 52 55 -3 0.0 -
11 Final Destiny 50 50 48 +2 0.5 -
12 Ravens Sword 65 53 62 -9 1.0 -
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