Official NHA Assessment

Race 1: 4RACING WELCOMES YOU MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

Back to Race
Line Horse
Back To The Future
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
0 / 11
Within 2 points
Significant Diffs
10 / 11
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Back To The Future   2    59.0    1    0.00     0.0   79    79           79    +0
2    Green Bubbles        2    59.0    2    1.50     0.0   74    82           82    +8
3    Memorial Day         2    59.0    3    6.00     0.0   73    79           79    +6
4    World Heritage       2    59.0    4    7.25     0.0   52    79           79    +27
5    Dusky Rose           3    59.0    5    9.00     6.0   -     67           67    +67
6    Batik                3    60.0    6    9.50     6.0   51    69           69    +18
7    Voshaarnooi          2    59.0    7    10.50    0.0   60    79           79    +19
8    Chicks For Free      3    60.0    8    11.75    6.0   54    69           69    +15
9    Gaetana              3    60.0    9    14.00    6.0   52    69           69    +17
10   Rise Above           3    59.0    10   27.00    6.0   -     67           67    +67
99   Chilly Princess      3    59.0    99   0.00     6.0   -     67           67    +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Back To The Future Line 79 74 79 -5 0.0
2 Green Bubbles 74 66 82 -16 0.0 -
3 Memorial Day 73 49 79 -30 0.0 -
4 World Heritage 52 55 79 -24 0.0 -
5 Dusky Rose - 58 67 -9 6.0 -
6 Batik 51 57 69 -12 6.0 -
7 Voshaarnooi 60 50 79 -29 0.0 -
8 Chicks For Free 54 54 69 -15 6.0 -
9 Gaetana 52 26 69 -43 6.0 -
10 Rise Above - 22 67 -45 6.0 -
99 Chilly Princess - 40 67 -27 6.0 -
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