Official NHA Assessment

Race 4: www.racecoast.co.za OPEN MAIDEN (For all Maidens)

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Line Horse
Sommerstern
Reference for assessment
Exact Matches
1 / 15
Calculated = Official
Close Matches
3 / 15
Within 2 points
Significant Diffs
10 / 15
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    Clark Griswold       3    60.0    1    0.00     6.0   -     62           6     +6
2    Sommerstern          4    57.5    2    0.40     3.5   67    67           67    +0
3    Balzi Rossi          2    57.0    3    2.40     0.0   78    70           70    -8
4    District Master      3    55.0    4    3.15     6.0   60    54           54    -6
5    One Cape             2    55.0    5    3.90     0.0   74    65           65    -9
6    Sliver Of Sunshine   3    60.0    6    6.90     6.0   -     62           62    +62
7    Nomore Bullets       2    60.0    7    7.90     0.0   -     74           74    +74
8    Quicksmart           2    52.5    8    8.10     0.0   68    59           59    -9
9    Double Distilled     3    55.0    9    10.60    6.0   35    52           52    +17
10   From The Hip         3    55.0    10   11.85    6.0   51    52           52    +1
11   Close Encounter      3    60.0    11   14.35    6.0   -     62           62    +62
12   Sandhurst            2    60.0    12   17.60    0.0   -     74           74    +74
99   Disruptive           2    54.0    99   0.00     0.0   -     62           62    +0
99   Royal Dawn           3    51.0    99   0.00     6.0   -     44           44    +0
99   Behave Harris        2    54.5    99   0.00     0.0   -     63           63    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Clark Griswold - 85 6 +79 6.0 -
2 Sommerstern Line 67 79 67 +12 3.5
3 Balzi Rossi 78 76 70 +6 0.0 -
4 District Master 60 73 54 +19 6.0 -
5 One Cape 74 72 65 +7 0.0 -
6 Sliver Of Sunshine - 66 62 +4 6.0 -
7 Nomore Bullets - 73 74 -1 0.0 -
8 Quicksmart 68 74 59 +15 0.0 -
9 Double Distilled 35 52 52 ✓ Match 6.0 -
10 From The Hip 51 56 52 +4 6.0 -
11 Close Encounter - 61 62 -1 6.0 -
12 Sandhurst - - 74 -74 0.0 -
99 Disruptive - 69 62 +7 0.0 -
99 Royal Dawn - 55 44 +11 6.0 -
99 Behave Harris - 83 63 +20 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