Official NHA Assessment

Race 4: CLASSIFIED STAKES (For horses with nett rating of 71 and below)

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Line Horse
Ian's Ferrari
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
0 / 6
Within 2 points
Significant Diffs
4 / 6
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    Ian's Ferrari        3    57.0    1    0.00     4.5   67    67           67    +0
2    Kursk (AUS)          6    60.0    2    0.25     0.0   65    82           82    +17
3    Coffeeberry          5    57.0    3    0.30     0.0   75    81           81    +6
4    Zavannahgold         2    55.0    4    2.80     0.0   71    74           74    +3
99   Cutback              6    59.0    99   0.00     0.0   -     80           80    +0
99   Queen Of Dallas      3    51.0    99   0.00     4.5   -     55           55    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Ian's Ferrari Line 67 63 67 -4 4.5
2 Kursk (AUS) 65 67 82 -15 0.0 -
3 Coffeeberry 75 72 81 -9 0.0 -
4 Zavannahgold 71 78 74 +4 0.0 -
99 Cutback - 63 80 -17 0.0 -
99 Queen Of Dallas - 40 55 -15 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