Official NHA Assessment

Race 1: BETWAY TOTE REWARDS CLUB MAIDEN PLATE (3 year-olds) (For Maiden 3 year-olds. R15 000 Win bonus ROA Members)

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Line Horse
Just Nuisance
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    Copper Mist          2    60.0    1    0.00     0.0   83    79           79    -4
2    Just Nuisance        2    60.0    2    0.60     0.0   84    84           84    +0
3    Thunee Playa         4    60.0    3    0.70     5.0   -     74           74    +74
4    Green Garnet         4    60.0    4    2.40     5.0   -     71           71    +71
5    Force De Dieu        3    60.0    5    2.60     8.0   -     65           65    +65
6    Golden Pavilion      2    60.0    6    3.60     0.0   78    80           80    +2
7    Twenty Drachma's     4    60.0    7    4.20     5.0   -     70           70    +70
8    Jury's Out           2    60.0    8    4.95     0.0   72    79           79    +7
9    Ryans Boulevard      3    60.0    9    5.85     8.0   -     63           63    +63
10   Galladorn            2    60.0    10   7.75     0.0   71    79           79    +8
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Copper Mist 83 62 79 -17 0.0 -
2 Just Nuisance Line 84 85 84 +1 0.0
3 Thunee Playa - 107 74 +33 5.0 -
4 Green Garnet - 81 71 +10 5.0 -
5 Force De Dieu - 64 65 -1 8.0 -
6 Golden Pavilion 78 95 80 +15 0.0 -
7 Twenty Drachma's - 83 70 +13 5.0 -
8 Jury's Out 72 85 79 +6 0.0 -
9 Ryans Boulevard - 82 63 +19 8.0 -
10 Galladorn 71 75 79 -4 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