Official NHA Assessment

Race 5: MERIT RATED 80 HANDICAP (Open)

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Line Horse
Forgotten Time
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
0 / 7
Within 2 points
Significant Diffs
3 / 7
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    Brianna              4    60.0    1    0.00     1.0   80    79           80    +0
2    Abayyaan             3    58.5    2    1.50     2.0   77    77           77    +0
3    Forgotten Time       3    55.5    3    2.00     2.0   71    71           71    +0
4    Mind Master          4    60.0    4    2.25     1.0   80    82           82    +2
5    Action Zone          3    55.0    5    3.25     2.0   75    69           69    -6
6    Tradition            4    57.0    6    4.50     1.0   74    73           73    -1
7    Differentiate        5    57.5    7    4.75     0.0   75    76           76    +1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Brianna 80 103 80 +23 1.0 -
2 Abayyaan 77 94 77 +17 2.0 -
3 Forgotten Time Line 71 76 71 +5 2.0
4 Mind Master 80 87 82 +5 1.0 -
5 Action Zone 75 90 69 +21 2.0 -
6 Tradition 74 77 73 +4 1.0 -
7 Differentiate 75 72 76 -4 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