Official NHA Assessment

Race 4: FOR HOSPITALITY BOOKINGS CALL 011 681 1796 PINNACLE STAKES (Open)

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Line Horse
Lucky Lad
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
7 / 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    William Robertson    6    59.5    1    0.00     0.0   122   140          128   +6
2    Lucky Lad            4    62.0    2    0.20     10.0  125   125          125   +0
3    Quantum Theory       5    56.0    3    2.00     0.0   112   133          133   +21
4    Red Bomber           2    54.0    4    3.25     5.5   109   118          118   +9
5    Pure Predator        2    60.0    5    4.25     5.5   119   130          130   +11
6    Captain Peg          5    50.5    6    5.25     0.0   104   122          122   +18
99   Cousin Casey         2    62.0    99   0.00     5.5   -     134          134   +0
99   Sheldon              6    56.0    99   0.00     0.0   -     133          133   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 William Robertson 122 124 128 -4 0.0 -
2 Lucky Lad Line 125 118 125 -7 10.0
3 Quantum Theory 112 112 133 -21 0.0 -
4 Red Bomber 109 86 118 -32 5.5 -
5 Pure Predator 119 118 130 -12 5.5 -
6 Captain Peg 104 100 122 -22 0.0 -
99 Cousin Casey - 125 134 -9 5.5 -
99 Sheldon - 106 133 -27 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