Official NHA Assessment

Race 8: NEXT FAIRVIEW RACEMEETING FRIDAY 14 MARCH PINNACLE STAKES (For all horses)

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Line Horse
Zatara Magic
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
9 / 10
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    Bournemouth          5    62.0    1    0.00     0.0   102   103          103   +1
2    Zatara Magic         5    62.0    2    1.25     0.0   108   108          108   +0
3    FireAlley            7    62.0    3    3.50     0.0   111   105          105   -6
4    Official Secret      6    58.5    4    4.50     0.0   106   97           97    -9
5    Woman's World        4    56.0    5    4.75     3.5   95    84           85    -10
6    Downing Seven        5    56.5    6    6.75     0.0   83    92           92    +9
7    San Quintin          6    52.0    7    8.50     0.0   59    83           83    +24
8    Electric Gold        5    62.0    8    11.00    0.0   108   103          103   -5
9    Gideon's Daughter    4    56.0    9    11.05    3.5   94    84           84    -10
10   Peace In Our World   6    59.5    10   11.55    0.0   94    98           98    +4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Bournemouth 102 110 103 +7 0.0 -
2 Zatara Magic Line 108 114 108 +6 0.0
3 FireAlley 111 107 105 +2 0.0 -
4 Official Secret 106 103 97 +6 0.0 -
5 Woman's World 95 94 85 +9 3.5 -
6 Downing Seven 83 69 92 -23 0.0 -
7 San Quintin 59 58 83 -25 0.0 -
8 Electric Gold 108 96 103 -7 0.0 -
9 Gideon's Daughter 94 94 84 +10 3.5 -
10 Peace In Our World 94 89 98 -9 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