Official NHA Assessment

Race 7: RACING240 FOR RACING. FOR YOU MR 77 HANDICAP (Open)

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Line Horse
Atkinson Grimshaw
Reference for assessment
Exact Matches
2 / 11
Calculated = Official
Close Matches
5 / 11
Within 2 points
Significant Diffs
3 / 11
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    Cherry Ano           5    59.0    1    0.00     0.0   80    77           80    +0
2    Central City         5    59.5    2    3.25     0.0   81    80           80    -1
3    Last Storm           2    56.5    3    4.50     0.0   74    72           72    -2
4    Atkinson Grimshaw    4    60.0    4    4.60     1.0   77    77           77    +0
5    Chariot Master       4    52.5    5    4.65     1.0   60    62           62    +2
6    Storm Commander      5    57.5    6    6.15     0.0   72    74           74    +2
7    My Boy Reecey        3    56.0    7    9.90     2.5   69    66           66    -3
8    Ana In Seattle       3    52.0    8    12.65    2.5   65    58           58    -7
9    Razor Red            3    54.5    9    13.65    2.5   66    63           63    -3
10   Flinders Range       3    56.5    10   13.75    2.5   70    67           67    -3
11   Fire Lord            3    59.0    11   28.00    2.5   75    72           72    -3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Cherry Ano 80 108 80 +28 0.0 -
2 Central City 81 81 80 +1 0.0 -
3 Last Storm 74 66 72 -6 0.0 -
4 Atkinson Grimshaw Line 77 75 77 -2 1.0
5 Chariot Master 60 61 62 -1 1.0 -
6 Storm Commander 72 74 74 ✓ Match 0.0 -
7 My Boy Reecey 69 72 66 +6 2.5 -
8 Ana In Seattle 65 62 58 +4 2.5 -
9 Razor Red 66 63 63 ✓ Match 2.5 -
10 Flinders Range 70 71 67 +4 2.5 -
11 Fire Lord 75 69 72 -3 2.5 -
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