Official NHA Assessment

Race 6: TAB 4RACING APP PINNACLE STAKES (For all horses)

Back to Race
Line Horse
Bon Vivant
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
5 / 8
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Bohica               5    62.0    1    0.00     0.0   122   143          128   +6
2    Bon Vivant           3    52.0    2    1.20     9.5   104   104          104   +0
3    Bard Of Avon         3    52.0    3    4.20     9.5   100   104          104   +4
4    Vars Vicky           4    56.0    4    4.40     11.0  111   109          109   -2
5    Ikigai               8    54.0    5    5.60     0.0   104   127          127   +23
6    Litigation           3    52.0    6    6.35     9.5   101   104          104   +3
7    Quantum King         3    52.0    7    6.60     9.5   99    104          104   +5
8    Ultra Magnus         6    56.0    8    7.10     0.0   110   131          131   +21
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Bohica 122 125 128 -3 0.0 -
2 Bon Vivant Line 104 96 104 -8 9.5
3 Bard Of Avon 100 105 104 +1 9.5 -
4 Vars Vicky 111 116 109 +7 11.0 -
5 Ikigai 104 91 127 -36 0.0 -
6 Litigation 101 113 104 +9 9.5 -
7 Quantum King 99 99 104 -5 9.5 -
8 Ultra Magnus 110 98 131 -33 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