Official NHA Assessment

Race 1: 4RACING WELCOMES YOU WORK RIDERS MAIDEN PLATE (F & M) (For Maiden F & M. R15 000 Win bonus ROA Members)

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Line Horse
Kit Kat Katie
Reference for assessment
Exact Matches
2 / 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    A Place In The Sun   5    60.0    1    0.00     0.0   48    58           54    +6
2    Miss Christmas       3    60.0    2    2.50     2.0   62    56           56    -6
3    Kit Kat Katie        2    60.0    3    3.25     0.0   60    60           60    +0
4    All Rise             3    60.0    4    7.50     2.0   48    54           54    +6
5    Spring Of Elixir     3    60.0    5    12.00    2.0   62    54           54    -8
6    Ideal Heart          3    60.0    6    12.50    2.0   58    54           54    -4
7    Chicago Lass         6    60.0    7    15.00    0.0   -     58           58    +58
8    Liefdesondereinde    4    60.0    8    26.00    0.5   -     57           57    +57
99   Three Bells          3    60.0    99   0.00     2.0   -     54           54    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 A Place In The Sun 48 74 54 +20 0.0 -
2 Miss Christmas 62 64 56 +8 2.0 -
3 Kit Kat Katie Line 60 60 60 ✓ Match 0.0
4 All Rise 48 50 54 -4 2.0 -
5 Spring Of Elixir 62 55 54 +1 2.0 -
6 Ideal Heart 58 54 54 ✓ Match 2.0 -
7 Chicago Lass - 43 58 -15 0.0 -
8 Liefdesondereinde - 10 57 -47 0.5 -
99 Three Bells - 43 54 -11 2.0 -
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