Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY RACING MAIDEN PLATE (For all Maidens. R15 000 WIN BONUS ROA MEMBERS)

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Line Horse
This Time Round
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
3 / 9
Within 2 points
Significant Diffs
5 / 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    Caitlyns Boy         2    60.0    1    0.00     3.0   66    61           61    -5
2    Settle The Dust      2    60.0    2    6.25     3.0   68    61           61    -7
3    Miss Tucker          3    57.5    3    8.00     4.5   -     53           53    +53
4    Woodland Ridge       2    60.0    4    8.25     3.0   78    61           68    -10
5    This Time Round      2    60.0    5    8.35     3.0   61    61           61    +0
6    Fiery Cliffs         3    57.5    6    8.60     4.5   63    53           53    -10
7    Siberian Fox         2    60.0    7    10.10    3.0   63    61           61    -2
8    Fly Better           3    57.5    8    10.85    4.5   59    53           53    -6
9    Kind Of Blue         2    57.5    9    15.60    3.0   65    56           56    -9
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Caitlyns Boy 66 71 61 +10 3.0 -
2 Settle The Dust 68 54 61 -7 3.0 -
3 Miss Tucker - 48 53 -5 4.5 -
4 Woodland Ridge 78 69 68 +1 3.0 -
5 This Time Round Line 61 54 61 -7 3.0
6 Fiery Cliffs 63 60 53 +7 4.5 -
7 Siberian Fox 63 62 61 +1 3.0 -
8 Fly Better 59 45 53 -8 4.5 -
9 Kind Of Blue 65 58 56 +2 3.0 -
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