Official NHA Assessment

Race 4: RACEHORSE OWNERS ASSOCIATION MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Volte Face
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
6 / 10
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    Atarime              3    60.0    1    0.00     5.0   77    63           63    -14
2    Karoo Gold           3    60.0    2    1.25     5.0   75    69           69    -6
3    Volte Face           3    60.0    3    1.50     5.0   68    68           68    +0
4    Rastignac            4    60.0    4    3.25     2.5   -     71           71    +71
5    Teo Torriatte        4    56.5    5    3.40     2.5   78    64           68    -10
6    Rock Of Bismantova   3    60.0    6    7.50     5.0   73    63           63    -10
7    Pomo Clapper         2    60.0    7    8.00     0.0   60    73           73    +13
8    Tropical Storm       3    60.0    8    25.00    5.0   60    63           63    +3
99   Crystal Maiden       4    56.5    99   0.00     2.5   -     61           61    +0
99   Dream State          2    60.0    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 Atarime 77 103 63 +40 5.0 -
2 Karoo Gold 75 67 69 -2 5.0 -
3 Volte Face Line 68 66 68 -2 5.0
4 Rastignac - 58 71 -13 2.5 -
5 Teo Torriatte 78 94 68 +26 2.5 -
6 Rock Of Bismantova 73 80 63 +17 5.0 -
7 Pomo Clapper 60 68 73 -5 0.0 -
8 Tropical Storm 60 57 63 -6 5.0 -
99 Crystal Maiden - 66 61 +5 2.5 -
99 Dream State - 58 73 -15 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