Official NHA Assessment

Race 4: MERIT RATED 79 HANDICAP (Open)

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Line Horse
Enrapture
Reference for assessment
Exact Matches
1 / 6
Calculated = Official
Close Matches
1 / 6
Within 2 points
Significant Diffs
2 / 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    Varnica              5    60.0    1    0.00     0.0   79    76           79    +0
2    Powder Puff          4    54.0    2    0.05     0.5   67    63           63    -4
3    Enrapture            5    59.5    3    1.30     0.0   78    78           78    +0
4    Mr Hugo              5    57.0    4    2.30     0.0   73    72           72    -1
5    Masaaken (AUS)       4    59.0    5    4.80     0.5   77    73           73    -4
6    Tradition            4    58.5    6    5.30     0.5   76    72           72    -4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Varnica 79 90 79 +11 0.0 -
2 Powder Puff 67 58 63 -5 0.5 -
3 Enrapture Line 78 82 78 +4 0.0
4 Mr Hugo 73 72 72 ✓ Match 0.0 -
5 Masaaken (AUS) 77 92 73 +19 0.5 -
6 Tradition 76 77 72 +5 0.5 -
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