Official NHA Assessment

Race 8: TAB 4RACING APP PINNACLE STAKES (Open)

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Line Horse
The Ultimate King
Reference for assessment
Exact Matches
3 / 8
Calculated = Official
Close Matches
4 / 8
Within 2 points
Significant Diffs
0 / 8
More than 5 points
Detailed Assessment
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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
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1    Choisaanada          2    58.5    1    0.00     0.0   116   120          120   +4
2    The Ultimate King    3    60.0    2    2.10     4.5   117   117          117   +0
3    King's Express       3    51.5    3    3.20     4.5   102   99           99    -3
4    Olivia's Way         3    58.0    4    3.60     4.5   115   111          111   -4
5    Hotarubi             4    52.0    5    4.70     2.0   100   103          103   +3
6    Indian Ocean         3    54.0    6    10.20    4.5   107   102          102   -5
7    Legend Of Arthur     3    58.0    7    15.70    4.5   110   110          110   +0
8    Taegan's Champ       3    54.5    8    99.99    4.5   103   103          103   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Choisaanada 116 121 120 +1 0.0 -
2 The Ultimate King Line 117 117 117 ✓ Match 4.5
3 King's Express 102 102 99 +3 4.5 -
4 Olivia's Way 115 114 111 +3 4.5 -
5 Hotarubi 100 98 103 -5 2.0 -
6 Indian Ocean 107 107 102 +5 4.5 -
7 Legend Of Arthur 110 110 110 ✓ Match 4.5 -
8 Taegan's Champ 103 103 103 ✓ Match 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