Official NHA Assessment

Race 5: ORMOND FERRARIS OAKS TRIAL (Listed) (For 3 year-old Fillies)

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Line Horse
Raratonga Rose
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
7 / 10
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    Ipso Facto           2    57.0    1    0.00     0.0   84    79           79    -5
2    Red Maple            3    57.0    2    1.35     4.5   80    75           75    -5
3    Littlemarysunshine   2    60.0    3    1.75     0.0   93    90           90    -3
3    Raratonga Rose       2    60.0    3    1.75     0.0   90    90           90    +0
5    High Roller          2    58.5    5    1.80     0.0   85    87           87    +2
6    Light Of Day         5    57.0    6    2.25     0.0   80    84           84    +4
7    Princess Ozma        2    57.0    7    6.50     0.0   80    79           79    -1
8    Pacific Express      2    54.0    8    10.00    0.0   72    73           73    +1
9    Back To The Future   2    57.0    9    17.00    0.0   82    79           79    -3
99   Three Strands        3    55.5    99   0.00     4.5   -     67           67    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Ipso Facto 84 92 79 +13 0.0 -
2 Red Maple 80 107 75 +32 4.5 -
3 Littlemarysunshine 93 95 90 +5 0.0 -
3 Raratonga Rose Line 90 80 90 -10 0.0
5 High Roller 85 86 87 -1 0.0 -
6 Light Of Day 80 61 84 -23 0.0 -
7 Princess Ozma 80 66 79 -13 0.0 -
8 Pacific Express 72 59 73 -14 0.0 -
9 Back To The Future 82 74 79 -5 0.0 -
99 Three Strands - 74 67 +7 4.5 -
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