Official NHA Assessment

Race 2: DRAKENSTEIN STUD FARM WORK RIDERS' MAIDEN PLATE (For all Maidens)

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Line Horse
Green Falcon
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
5 / 10
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    Night Tiger          5    62.0    1    0.00     0.0   75    82           70    -5
2    Green Falcon         2    62.0    2    0.05     3.5   75    75           75    +0
3    Black Egret          3    62.0    3    0.35     5.0   79    72           72    -7
4    Trippi T             3    62.0    4    1.10     5.0   74    72           72    -2
5    Cannatonic           3    62.0    5    4.35     5.0   61    72           72    +11
6    Furie Nocturne       2    62.0    6    5.60     3.5   75    75           75    +0
7    Aussenkehr           2    62.0    7    6.10     3.5   81    75           75    -6
8    Silver Sleet         4    60.5    8    14.35    6.0   -     67           67    +67
9    Broadway Alley       2    62.0    9    18.60    3.5   -     75           75    +75
99   Sagan                3    62.0    99   0.00     5.0   -     72           72    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Night Tiger 75 67 70 -3 0.0 -
2 Green Falcon Line 75 62 75 -13 3.5
3 Black Egret 79 90 72 +18 5.0 -
4 Trippi T 74 75 72 +3 5.0 -
5 Cannatonic 61 48 72 -24 5.0 -
6 Furie Nocturne 75 70 75 -5 3.5 -
7 Aussenkehr 81 79 75 +4 3.5 -
8 Silver Sleet - 42 67 -25 6.0 -
9 Broadway Alley - 49 75 -26 3.5 -
99 Sagan - 70 72 -2 5.0 -
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