Official NHA Assessment

Race 4: AIR ZIMBABWE MERIT RATED 78 HANDICAP (Open)

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Line Horse
Forgotten Time
Reference for assessment
Exact Matches
0 / 5
Calculated = Official
Close Matches
1 / 5
Within 2 points
Significant Diffs
2 / 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    Jet Mirage           3    60.0    1    0.00     1.5   78    78           78    +0
2    Justadoreher         5    58.0    2    2.50     0.0   74    77           77    +3
3    Forgotten Time       3    56.5    3    3.50     1.5   71    71           71    +0
4    Tradition            4    58.0    4    5.00     2.0   74    73           73    -1
5    Al Mashriq           4    58.0    5    10.00    2.0   74    73           73    -1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Jet Mirage 78 100 78 +22 1.5 -
2 Justadoreher 74 68 77 -9 0.0 -
3 Forgotten Time Line 71 76 71 +5 1.5
4 Tradition 74 77 73 +4 2.0 -
5 Al Mashriq 74 71 73 -2 2.0 -
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