Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY MAIDEN PLATE (For Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Hat Man
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
6 / 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    Haphazard            3    56.5    1    0.00     7.5   -     51           6     +6
2    American Pitbull     5    60.0    2    0.50     0.0   -     73           73    +73
3    House Of Sussex      4    60.0    3    0.60     9.0   58    55           55    -3
4    Velvet Valour        3    59.0    4    1.85     7.5   73    56           63    -10
5    Hat Man              4    60.0    5    3.60     9.0   55    55           55    +0
6    Glen Nevis           4    60.0    6    10.60    9.0   -     55           55    +55
7    Silvery Surfer       3    59.0    7    15.35    7.5   -     56           56    +56
8    Mafiabagsthemoney    5    60.0    8    15.45    0.0   23    73           73    +50
99   War Of Hearts        3    59.0    99   99.97    7.5   63    56           63    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Haphazard - 67 6 +61 7.5 -
2 American Pitbull - 62 73 -11 0.0 -
3 House Of Sussex 58 50 55 -5 9.0 -
4 Velvet Valour 73 60 63 -3 7.5 -
5 Hat Man Line 55 60 55 +5 9.0
6 Glen Nevis - 37 55 -18 9.0 -
7 Silvery Surfer - 72 56 +16 7.5 -
8 Mafiabagsthemoney 23 39 73 -34 0.0 -
99 War Of Hearts 63 52 63 -11 7.5 -
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