Official NHA Assessment

Race 7: TAB 4RACING APP PINNACLE STAKES (For all horses)

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Line Horse
Zatara Magic
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
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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
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1    My Best Shot         3    60.0    1    0.00     2.0   111   99           99    -12
2    Zatara Magic         5    60.0    2    1.75     0.0   108   108          108   +0
3    Peace In Our World   6    53.0    3    2.50     0.0   91    93           93    +2
4    Global Ally          6    54.0    4    2.75     0.0   96    94           94    -2
5    Joy And Peace        4    58.0    5    4.00     1.0   111   99           101   -10
6    Electric Gold        5    57.0    6    9.25     0.0   102   97           97    -5
7    Harold The Duke      3    50.5    7    18.00    2.0   88    80           80    -8
8    Mister Speaker       3    52.5    8    18.05    2.0   95    84           85    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 My Best Shot 111 116 99 +17 2.0 -
2 Zatara Magic Line 108 114 108 +6 0.0
3 Peace In Our World 91 89 93 -4 0.0 -
4 Global Ally 96 97 94 +3 0.0 -
5 Joy And Peace 111 110 101 +9 1.0 -
6 Electric Gold 102 96 97 -1 0.0 -
7 Harold The Duke 88 86 80 +6 2.0 -
8 Mister Speaker 95 91 85 +6 2.0 -
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