Official NHA Assessment

Race 6: OPEN A TABGOLD ACCOUNT - 031 314 1874 PINNACLE STAKES (For all horses)

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Line Horse
African Skyline
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
1 / 12
Within 2 points
Significant Diffs
9 / 12
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    William Robertson    6    62.0    1    0.00     0.0   125   109          109   -16
2    Good Traveller       6    57.5    2    1.80     0.0   103   100          100   -3
3    Beechamwood Boy      6    58.0    3    3.00     0.0   98    101          101   +3
4    Imilenzeyokududuma   6    58.0    4    3.50     0.0   101   101          101   +0
5    African Skyline      6    58.0    5    3.75     0.0   101   101          101   +0
6    Strawberry Bear      2    59.0    6    4.15     4.0   106   95           96    -10
7    Captain Casey        2    55.0    7    4.55     4.0   102   87           92    -10
8    Queue Wing           7    58.0    8    6.75     0.0   97    101          101   +4
9    Proud Master         3    58.0    9    7.95     6.0   100   89           90    -10
10   Master Of Destiny    8    53.5    10   9.55     0.0   89    92           92    +3
11   Ishnana              7    48.0    11   10.55    0.0   86    81           81    -5
99   Down To Business     2    58.0    99   0.00     4.0   -     93           93    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 William Robertson 125 124 109 +15 0.0 -
2 Good Traveller 103 108 100 +8 0.0 -
3 Beechamwood Boy 98 84 101 -17 0.0 -
4 Imilenzeyokududuma 101 109 101 +8 0.0 -
5 African Skyline Line 101 98 101 -3 0.0
6 Strawberry Bear 106 106 96 +10 4.0 -
7 Captain Casey 102 96 92 +4 4.0 -
8 Queue Wing 97 81 101 -20 0.0 -
9 Proud Master 100 97 90 +7 6.0 -
10 Master Of Destiny 89 73 92 -19 0.0 -
11 Ishnana 86 83 81 +2 0.0 -
99 Down To Business - 100 93 +7 4.0 -
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