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
King Of Queen
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    Call To Glory (GB)   5    57.0    1    0.00     0.0   66    63           63    -3
2    King Of Queen        2    60.0    2    2.25     0.0   72    72           72    +0
3    Regazzo Grande       2    60.0    3    3.50     0.0   64    70           70    +6
4    Hat Hot Hat          4    60.0    4    6.00     0.5   67    68           68    +1
5    Sweet And True       3    56.5    5    6.75     1.5   -     59           59    +59
6    Potent Captain       4    60.0    6    10.00    0.5   60    68           68    +8
7    Mister Speaker       3    56.0    7    13.50    1.5   -     58           58    +58
8    Top Dollar           5    58.5    8    15.00    0.0   34    66           66    +32
9    Bumble Bee Gold      2    52.0    9    15.50    0.0   -     53           53    +53
10   Duke Orsino          3    60.0    10   35.75    1.5   -     66           66    +66
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Call To Glory (GB) 66 84 63 +21 0.0 -
2 King Of Queen Line 72 65 72 -7 0.0
3 Regazzo Grande 64 72 70 +2 0.0 -
4 Hat Hot Hat 67 66 68 -2 0.5 -
5 Sweet And True - 77 59 +18 1.5 -
6 Potent Captain 60 54 68 -14 0.5 -
7 Mister Speaker - 91 58 +33 1.5 -
8 Top Dollar 34 42 66 -24 0.0 -
9 Bumble Bee Gold - 56 53 +3 0.0 -
10 Duke Orsino - 10 66 -56 1.5 -
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