Official NHA Assessment

Race 2: GAUTENG GUINEAS DAY 3 FEBRUARY MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Guardia Regine
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
7 / 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    Mid Winter Wind      3    60.0    1    0.00     5.0   89    76           76    -13
2    Theres A Light       4    60.0    2    4.20     6.0   70    74           74    +4
3    Donna Mo             2    57.5    3    4.30     3.5   78    74           74    -4
4    Galladorn            2    60.0    4    5.25     3.5   67    79           79    +12
5    Guardia Regine       3    60.0    5    5.75     5.0   76    76           76    +0
6    Act Of Power         3    60.0    6    7.50     5.0   68    76           76    +8
7    Phala Millions       4    60.0    7    8.25     6.0   74    74           74    +0
8    Tropical Storm       3    60.0    8    17.00    5.0   -     76           76    +76
9    Global Honour        3    60.0    9    25.50    5.0   -     76           76    +76
99   Glawari              2    53.5    99   0.00     3.5   -     66           66    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Mid Winter Wind 89 116 76 +40 5.0 -
2 Theres A Light 70 76 74 +2 6.0 -
3 Donna Mo 78 89 74 +15 3.5 -
4 Galladorn 67 75 79 -4 3.5 -
5 Guardia Regine Line 76 67 76 -9 5.0
6 Act Of Power 68 50 76 -26 5.0 -
7 Phala Millions 74 66 74 -8 6.0 -
8 Tropical Storm - 57 76 -19 5.0 -
9 Global Honour - - 76 -76 5.0 -
99 Glawari - 65 66 -1 3.5 -
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