Official NHA Assessment

Race 6: JONSSON WORKWEAR DINGAANS (Grade 2) (For 3 year-olds)

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Line Horse
Prophet
Reference for assessment
Exact Matches
1 / 13
Calculated = Official
Close Matches
1 / 13
Within 2 points
Significant Diffs
9 / 13
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    Union Square         2    60.0    1    0.00     0.0   100   110          106   +6
2    Shoemaker            2    60.0    2    1.00     0.0   96    114          114   +18
3    East Coast           5    60.0    3    1.75     0.0   106   113          113   +7
4    Royal Victory        5    60.0    4    2.50     0.0   109   112          112   +3
5    Thunderstruck        2    60.0    5    4.00     0.0   114   111          111   -3
6    Prophet              2    60.0    6    4.75     0.0   110   110          110   +0
7    Electric Gold        5    60.0    7    5.25     0.0   92    110          110   +18
8    Billy Bowlegs        5    60.0    8    6.50     0.0   96    110          110   +14
9    Argo Alley           2    60.0    9    8.75     0.0   103   110          110   +7
10   Otto Luyken          5    60.0    10   9.00     0.0   76    110          110   +34
11   Meridius             2    60.0    11   9.25     0.0   90    110          110   +20
12   Vesuvio              5    60.0    12   10.50    0.0   78    110          110   +32
13   Unzen                3    60.0    13   22.00    7.0   108   96           98    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Union Square 100 110 106 +4 0.0 -
2 Shoemaker 96 109 114 -5 0.0 -
3 East Coast 106 102 113 -11 0.0 -
4 Royal Victory 109 124 112 +12 0.0 -
5 Thunderstruck 114 128 111 +17 0.0 -
6 Prophet Line 110 66 110 -44 0.0
7 Electric Gold 92 96 110 -14 0.0 -
8 Billy Bowlegs 96 104 110 -6 0.0 -
9 Argo Alley 103 110 110 ✓ Match 0.0 -
10 Otto Luyken 76 116 110 +6 0.0 -
11 Meridius 90 115 110 +5 0.0 -
12 Vesuvio 78 85 110 -25 0.0 -
13 Unzen 108 116 98 +18 7.0 -
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