Official NHA Assessment

Race 8: FOR HOSPITALITY BOOKINGS CALL 011 681 1796 PINNACLE STAKES (Open)

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Line Horse
Ziyasha
Reference for assessment
Exact Matches
2 / 11
Calculated = Official
Close Matches
5 / 11
Within 2 points
Significant Diffs
5 / 11
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    Ziyasha              2    60.0    1    0.00     1.5   118   118          118   +0
2    Destiny Of Fire      2    50.0    2    1.40     1.5   105   98           98    -7
3    Almond Sea           3    58.0    3    1.50     2.5   118   112          112   -6
4    Slinky Mapimpi       5    50.0    4    2.40     0.0   101   101          101   +0
5    Lead The Charge      2    50.0    5    2.50     1.5   92    98           98    +6
6    Quantum Theory       5    56.0    6    3.20     0.0   112   113          113   +1
7    Fire 'N Flames       4    52.0    7    3.95     0.0   103   105          105   +2
8    Mover And Shaker     5    56.0    8    4.95     0.0   112   113          113   +1
9    Chasing Happiness    3    54.0    9    5.25     2.5   110   104          104   -6
10   Chocolate Soldier    3    52.0    10   9.75     2.5   104   100          100   -4
11   Night Bomber         4    50.0    11   10.75    0.0   95    101          101   +6
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Ziyasha Line 118 118 118 ✓ Match 1.5
2 Destiny Of Fire 105 105 98 +7 1.5 -
3 Almond Sea 118 118 112 +6 2.5 -
4 Slinky Mapimpi 101 101 101 ✓ Match 0.0 -
5 Lead The Charge 92 92 98 -6 1.5 -
6 Quantum Theory 112 112 113 -1 0.0 -
7 Fire 'N Flames 103 103 105 -2 0.0 -
8 Mover And Shaker 112 112 113 -1 0.0 -
9 Chasing Happiness 110 110 104 +6 2.5 -
10 Chocolate Soldier 104 104 100 +4 2.5 -
11 Night Bomber 95 95 101 -6 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