Official NHA Assessment

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

Back to Race
Line Horse
Bella Boop Boop
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
7 / 9
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Lady Sabrina         3    59.0    1    0.00     6.0   -     64           6     +6
2    Great Notion         3    59.0    2    3.00     6.0   79    66           69    -10
3    Lacewing             3    59.0    3    5.00     6.0   79    64           69    -10
4    Bella Boop Boop      3    59.0    4    8.80     6.0   64    64           64    +0
5    Captains Clover      2    59.0    5    12.40    0.0   54    76           76    +22
99   Villa Semaya         2    60.0    99   99.97    0.0   56    78           56    +0
99   Devilishlygorgeous   4    60.0    99   0.00     3.0   -     72           72    +0
99   Lone Embrace         3    59.0    99   0.00     6.0   -     64           64    +0
99   Gloria Mundi         2    59.0    99   0.00     0.0   -     76           76    +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Lady Sabrina - 82 6 +76 6.0 -
2 Great Notion 79 87 69 +18 6.0 -
3 Lacewing 79 71 69 +2 6.0 -
4 Bella Boop Boop Line 64 58 64 -6 6.0
5 Captains Clover 54 54 76 -22 0.0 -
99 Villa Semaya 56 59 56 +3 0.0 -
99 Devilishlygorgeous - 64 72 -8 3.0 -
99 Lone Embrace - - 64 -64 6.0 -
99 Gloria Mundi - 66 76 -10 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