Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY RACING MAIDEN PLATE (For all Maidens)

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Line Horse
Seismic Event
Reference for assessment
Exact Matches
1 / 7
Calculated = Official
Close Matches
2 / 7
Within 2 points
Significant Diffs
5 / 7
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    Dog Detachment       4    58.5    1    0.00     9.0   59    61           61    +2
2    Seismic Event        2    59.0    2    0.75     5.0   70    70           70    +0
3    Dreamt I Could Fly   2    56.5    3    1.50     5.0   74    65           65    -9
4    Greek Mafia          5    60.0    4    4.25     0.0   -     82           82    +82
5    Peronzada            3    57.5    5    7.50     7.5   51    62           62    +11
6    Miss United States   3    57.5    6    7.60     7.5   48    62           62    +14
99   This Time Round      2    59.0    99   0.00     5.0   -     70           70    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Dog Detachment 59 60 61 -1 9.0 -
2 Seismic Event Line 70 70 70 ✓ Match 5.0
3 Dreamt I Could Fly 74 57 65 -8 5.0 -
4 Greek Mafia - 45 82 -37 0.0 -
5 Peronzada 51 56 62 -6 7.5 -
6 Miss United States 48 52 62 -10 7.5 -
99 This Time Round - 54 70 -16 5.0 -
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