Official NHA Assessment

Race 4: GRADUATION PLATE (Maidens,1 & 2 time winners)

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Line Horse
Zazu
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
2 / 6
Within 2 points
Significant Diffs
3 / 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    Down To Business     2    60.0    1    0.00     0.0   86    77           77    -9
1    Zavannahgold         2    54.5    1    0.00     0.0   69    66           66    -3
3    Zazu                 6    57.0    3    3.50     0.0   72    72           72    +0
4    Testify              2    59.5    4    7.00     0.0   73    76           76    +3
5    Coffeeberry          5    57.0    5    9.00     0.0   75    71           71    -4
99   Qunetra              4    57.5    99   0.00     1.5   -     69           69    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Down To Business 86 100 77 +23 0.0 -
1 Zavannahgold 69 78 66 +12 0.0 -
3 Zazu Line 72 71 72 -1 0.0
4 Testify 73 71 76 -5 0.0 -
5 Coffeeberry 75 72 71 +1 0.0 -
99 Qunetra - 83 69 +14 1.5 -
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