Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY MAIDEN JUVENILE PLATE (For 2 yo R100 000 Win BSA / RCS Bonus)

Back to Race
Line Horse
None identified
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
0 / 6
Within 2 points
Significant Diffs
0 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Say A Prayer         2    57.5    1    0.00     1.5   -     -            -     +0
2    Carnival             2    57.5    2    0.10     1.5   -     -            -     +0
3    J Lordi              2    57.5    3    2.10     1.5   -     -            -     +0
4    River View           2    57.5    4    5.35     1.5   -     -            -     +0
5    Seattle Glow         2    57.5    5    7.10     1.5   -     -            -     +0
99   Bold Tigress         2    57.5    99   0.00     1.5   -     -            -     +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Say A Prayer - - - - 1.5 -
2 Carnival - - - - 1.5 -
3 J Lordi - - - - 1.5 -
4 River View - - - - 1.5 -
5 Seattle Glow - - - - 1.5 -
99 Bold Tigress - - - - 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