Official NHA Assessment

Race 5: OPEN HANDICAP (OPEN TO ALL HORSES)

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Line Horse
Raining Again
Reference for assessment
Exact Matches
0 / 5
Calculated = Official
Close Matches
0 / 5
Within 2 points
Significant Diffs
3 / 5
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    Action Zone          3    60.0    1    0.00     7.0   93    77           93    +0
2    Ultimate Jewel       5    55.0    2    1.75     0.0   83    84           84    +1
3    Raining Again        6    55.0    3    3.00     0.0   83    83           83    +0
4    Wantage              8    58.0    4    4.50     0.0   89    87           87    -2
5    Admirals Chance      5    56.0    5    7.50     0.0   85    83           83    -2
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Action Zone 93 90 93 -3 7.0 -
2 Ultimate Jewel 83 80 84 -4 0.0 -
3 Raining Again Line 83 73 83 -10 0.0
4 Wantage 89 78 87 -9 0.0 -
5 Admirals Chance 85 77 83 -6 0.0 -
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