Official NHA Assessment

Race 1: 4RACING THANKS & APPRECIATES ROBYN KLAASEN RACING WORK RIDERS MAIDEN PLATE (F & M) (For Maiden F & M. R15 000 Win bonus

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Line Horse
Southern Style
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
5 / 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    Neerah               2    57.0    1    0.00     1.0   -     52           6     +6
2    Liberty Flag         2    60.0    2    1.00     1.0   -     58           58    +58
3    Southern Style       5    60.0    3    2.00     0.0   60    60           60    +0
4    World Heritage       2    60.0    4    2.50     1.0   54    58           58    +4
5    Together Again       5    60.0    5    4.80     0.0   56    60           60    +4
6    Kit Kat Katie        2    60.0    6    5.50     1.0   55    58           58    +3
7    Perini Palace        4    57.5    7    9.75     2.5   -     50           50    +50
8    Tiny Dancer          2    60.0    8    10.35    1.0   40    58           58    +18
9    Jailhouse Rebel      2    57.5    9    17.00    1.0   -     53           53    +53
99   Butternutenrooiwyn   2    57.0    99   0.00     1.0   -     52           52    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Neerah - 77 6 +71 1.0 -
2 Liberty Flag - 59 58 +1 1.0 -
3 Southern Style Line 60 54 60 -6 0.0
4 World Heritage 54 55 58 -3 1.0 -
5 Together Again 56 55 60 -5 0.0 -
6 Kit Kat Katie 55 60 58 +2 1.0 -
7 Perini Palace - 56 50 +6 2.5 -
8 Tiny Dancer 40 35 58 -23 1.0 -
9 Jailhouse Rebel - 58 53 +5 1.0 -
99 Butternutenrooiwyn - 60 52 +8 1.0 -
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