Official NHA Assessment

Race 2: BOOK A TABLE CALL 011 681 1796 MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Joker Man
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
0 / 11
Within 2 points
Significant Diffs
10 / 11
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    Joker Man            4    60.0    1    0.00     7.0   80    80           80    +0
2    Sutherland           4    60.0    2    2.25     7.0   -     80           80    +80
3    Van Meijel           3    60.0    3    4.50     6.0   72    82           82    +10
4    Charlie's Dream      4    60.0    4    14.75    7.0   -     80           80    +80
5    Cayenne Pepper       3    58.5    5    19.00    6.0   -     79           79    +79
6    Silver Seven         3    60.0    6    20.25    6.0   -     82           82    +82
7    Pearl Harbor         2    60.0    7    21.00    4.0   69    86           86    +17
8    Social Set           3    60.0    8    22.25    6.0   -     82           82    +82
99   Trip To States       5    60.0    99   0.00     0.0   -     94           94    +0
99   Big Boy Bruce        2    60.0    99   0.00     4.0   -     86           86    +0
99   Scarlet Red          3    57.5    99   0.00     6.0   -     77           77    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Joker Man Line 80 98 80 +18 7.0
2 Sutherland - 85 80 +5 7.0 -
3 Van Meijel 72 54 82 -28 6.0 -
4 Charlie's Dream - - 80 -80 7.0 -
5 Cayenne Pepper - 39 79 -40 6.0 -
6 Silver Seven - 38 82 -44 6.0 -
7 Pearl Harbor 69 62 86 -24 4.0 -
8 Social Set - - 82 -82 6.0 -
99 Trip To States - 63 94 -31 0.0 -
99 Big Boy Bruce - 76 86 -10 4.0 -
99 Scarlet Red - 64 77 -13 6.0 -
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