Official NHA Assessment

Race 6: GREYVILLE CONVENTION CENTRE MR 74 HANDICAP (Open)

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Line Horse
Preemptive Strike
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
3 / 8
Within 2 points
Significant Diffs
0 / 8
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    Winter Waves         7    61.0    1    0.00     0.0   76    76           76    +0
2    Knight Warrior       5    56.5    2    2.40     0.0   67    69           69    +2
3    Preemptive Strike    4    60.5    3    3.60     0.5   75    75           75    +0
4    Famous And Rich      2    57.0    4    3.65     0.0   76    69           69    -7
5    Madison Blues        3    60.0    5    4.25     1.0   74    73           73    -1
6    Brass Bell           8    52.5    6    4.45     0.0   59    59           59    +0
7    One Irish Rover      5    55.5    7    6.75     0.0   65    65           65    +0
8    Lake Como            3    55.0    8    7.35     1.0   67    62           62    -5
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Winter Waves 76 77 76 +1 0.0 -
2 Knight Warrior 67 74 69 +5 0.0 -
3 Preemptive Strike Line 75 70 75 -5 0.5
4 Famous And Rich 76 66 69 -3 0.0 -
5 Madison Blues 74 70 73 -3 1.0 -
6 Brass Bell 59 55 59 -4 0.0 -
7 One Irish Rover 65 65 65 ✓ Match 0.0 -
8 Lake Como 67 61 62 -1 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