Official NHA Assessment

Race 2: GAUTENG GUINEAS DAY 4 FEBRUARY MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Rock Of Bismantova
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
7 / 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    Blackberry Breeze    4    59.0    1    0.00     2.5   68    80           70    +2
2    Marauding Horde      4    59.0    2    2.00     2.5   -     83           83    +83
3    Force De Dieu        3    59.0    3    2.75     5.0   72    77           77    +5
4    Rock Of Bismantova   3    59.0    4    3.75     5.0   76    76           76    +0
5    Touched By Stars     5    60.0    5    4.00     0.0   53    88           88    +35
6    Nkandla Gold         4    59.0    6    4.50     2.5   60    80           80    +20
7    Damascodoro          3    59.0    7    6.00     5.0   55    75           75    +20
8    Oklahoma Twister     4    59.0    8    6.25     2.5   75    80           80    +5
99   Atarime              3    59.0    99   0.00     5.0   -     75           75    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Blackberry Breeze 68 71 70 +1 2.5 -
2 Marauding Horde - 112 83 +29 2.5 -
3 Force De Dieu 72 64 77 -13 5.0 -
4 Rock Of Bismantova Line 76 80 76 +4 5.0
5 Touched By Stars 53 52 88 -36 0.0 -
6 Nkandla Gold 60 63 80 -17 2.5 -
7 Damascodoro 55 59 75 -16 5.0 -
8 Oklahoma Twister 75 71 80 -9 2.5 -
99 Atarime - 103 75 +28 5.0 -
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