Official NHA Assessment

Race 4: FOR HOSPITALITY BOOKINGS CALL 011 681 1796 MAIDEN PLATE (For all Maidens)

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Line Horse
Jet Querari
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
2 / 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    Summer Shade         4    60.0    1    0.00     2.0   64    71           70    +6
2    Cyber Spirit         2    53.5    2    0.30     0.5   67    61           61    -6
3    Jet Querari          3    60.0    3    0.80     1.5   72    72           72    +0
4    Secret Warrior       2    57.0    4    4.00     0.5   -     68           68    +68
5    Chilli Marmalade     5    57.5    5    7.00     0.0   59    70           70    +11
6    Jikelele             2    57.0    6    10.25    0.5   -     68           68    +68
7    True Hero            2    57.0    7    14.50    0.5   -     68           68    +68
99   Magwegwe             2    57.0    99   0.00     0.5   -     68           68    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Summer Shade 64 52 70 -18 2.0 -
2 Cyber Spirit 67 62 61 +1 0.5 -
3 Jet Querari Line 72 68 72 -4 1.5
4 Secret Warrior - 70 68 +2 0.5 -
5 Chilli Marmalade 59 48 70 -22 0.0 -
6 Jikelele - - 68 -68 0.5 -
7 True Hero - - 68 -68 0.5 -
99 Magwegwe - 62 68 -6 0.5 -
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