Official NHA Assessment

Race 1: WELCOME TO CAPE RACING WORK RIDERS' MAIDEN PLATE (For all Maidens)

Back to Race
Line Horse
Birdie And Bogie
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
1 / 7
Within 2 points
Significant Diffs
6 / 7
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Birdie And Bogie     3    62.0    1    0.00     4.5   70    70           70    +0
2    Jury Duty            4    59.5    2    1.25     5.0   65    64           64    -1
3    Wylie Jack           6    62.0    3    6.50     0.0   54    79           79    +25
4    Georgie George       3    62.0    4    6.55     4.5   -     70           70    +70
5    Raining Again        6    62.0    5    6.95     0.0   76    79           79    +3
6    Ideal Time           3    62.0    6    11.45    4.5   51    70           70    +19
7    Boisterous Buddy     3    62.0    7    11.75    4.5   68    70           70    +2
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Birdie And Bogie Line 70 68 70 -2 4.5
2 Jury Duty 65 77 64 +13 5.0 -
3 Wylie Jack 54 61 79 -18 0.0 -
4 Georgie George - 63 70 -7 4.5 -
5 Raining Again 76 73 79 -6 0.0 -
6 Ideal Time 51 54 70 -16 4.5 -
7 Boisterous Buddy 68 62 70 -8 4.5 -
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