Official NHA Assessment

Race 4: RACING240 MR 66 HANDICAP (Open)

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Line Horse
Rototo
Reference for assessment
Exact Matches
2 / 11
Calculated = Official
Close Matches
3 / 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    Global Drumbeat      3    57.5    1    0.00     7.0   62    55           62    +0
2    Olive Oyl            2    60.0    2    0.25     0.0   80    74           74    -6
3    Rototo               3    57.5    3    0.75     7.0   61    61           61    +0
4    Donny's Boy          3    60.0    4    1.50     7.0   67    65           65    -2
5    Garden Sun           3    57.5    5    1.75     7.0   70    60           60    -10
6    Golden Grey          4    61.0    6    1.85     3.5   68    74           74    +6
7    Outback Express      2    56.0    7    3.60     0.0   80    69           70    -10
8    Rock Of Futura       2    59.0    8    4.85     0.0   78    72           72    -6
9    Potent Captain       4    55.0    9    5.35     3.5   56    57           57    +1
10   Pardon Me            5    56.0    10   6.60     0.0   58    66           66    +8
11   Oranjemund           4    59.5    11   8.85     3.5   65    66           66    +1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Global Drumbeat 62 65 62 +3 7.0 -
2 Olive Oyl 80 77 74 +3 0.0 -
3 Rototo Line 61 61 61 ✓ Match 7.0
4 Donny's Boy 67 68 65 +3 7.0 -
5 Garden Sun 70 69 60 +9 7.0 -
6 Golden Grey 68 64 74 -10 3.5 -
7 Outback Express 80 71 70 +1 0.0 -
8 Rock Of Futura 78 72 72 ✓ Match 0.0 -
9 Potent Captain 56 54 57 -3 3.5 -
10 Pardon Me 58 53 66 -13 0.0 -
11 Oranjemund 65 63 66 -3 3.5 -
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