Official NHA Assessment

Race 6: www.trackandball.co.za MR 78 HANDICAP (Open)

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Line Horse
Sea Master
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
6 / 9
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    Straight Up          5    59.5    1    0.00     0.0   77    76           77    +0
2    Sea Master           4    61.0    2    0.40     2.0   80    80           80    +0
3    Galway               6    61.0    3    2.30     0.0   80    81           81    +1
4    Astrocyte            3    54.5    4    2.45     4.5   76    59           66    -10
5    Maxiumus             4    56.5    5    3.65     2.0   71    67           67    -4
6    Congo Compaq         5    58.5    6    3.95     0.0   75    75           75    +0
7    Southern Cape        3    58.5    7    4.55     4.5   84    65           74    -10
8    Farland              6    57.0    8    10.75    0.0   72    71           71    -1
99   Electric Surge       5    58.0    99   0.00     0.0   -     73           73    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Straight Up 77 79 77 +2 0.0 -
2 Sea Master Line 80 99 80 +19 2.0
3 Galway 80 74 81 -7 0.0 -
4 Astrocyte 76 69 66 +3 4.5 -
5 Maxiumus 71 88 67 +21 2.0 -
6 Congo Compaq 75 72 75 -3 0.0 -
7 Southern Cape 84 96 74 +22 4.5 -
8 Farland 72 59 71 -12 0.0 -
99 Electric Surge - 83 73 +10 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