Official NHA Assessment

Race 1: JUVENILE MALE GOOD FOR YOU & JUVENILE FEMALE UKUDUMA MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

Back to Race
Line Horse
Playful Joules
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
7 / 10
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Playful Joules       2    60.0    1    0.00     0.0   74    74           74    +0
2    Laydelay             2    58.0    2    0.40     0.0   -     75           75    +75
3    Calanque             3    58.0    3    1.65     8.5   -     56           56    +56
4    La Patrona           2    58.0    4    2.65     0.0   -     72           72    +72
5    Lark's Song          3    58.0    5    3.40     8.5   -     54           54    +54
6    Surely Not           3    56.5    6    3.90     8.5   -     51           51    +51
7    Autumn Rush          3    58.0    7    9.90     8.5   -     53           53    +53
8    Redlight Lane        3    58.0    8    11.40    8.5   -     53           53    +53
9    Lady Amber           3    58.0    9    11.70    8.5   -     53           53    +53
99   Beautiful One        2    58.0    99   0.00     0.0   -     70           70    +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Playful Joules Line 74 62 74 -12 0.0
2 Laydelay - 76 75 +1 0.0 -
3 Calanque - 90 56 +34 8.5 -
4 La Patrona - 78 72 +6 0.0 -
5 Lark's Song - 78 54 +24 8.5 -
6 Surely Not - 60 51 +9 8.5 -
7 Autumn Rush - 68 53 +15 8.5 -
8 Redlight Lane - 73 53 +20 8.5 -
9 Lady Amber - 50 53 -3 8.5 -
99 Beautiful One - 69 70 -1 0.0 -
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