Official NHA Assessment

Race 6: RACING240 CLASSIFIED STAKES (For horses with nett rating of 78 and below)

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Line Horse
Que Shiraz
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
3 / 8
Within 2 points
Significant Diffs
4 / 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    Millahue             3    60.0    1    0.00     1.5   78    74           74    -4
2    Que Shiraz           3    60.0    2    1.25     1.5   78    78           78    +0
3    Night Ruler          3    60.0    3    1.65     1.5   81    77           77    -4
4    Gentleman Joe        3    60.0    4    2.05     1.5   78    77           77    -1
5    Policy Target        5    56.0    5    5.30     0.0   69    69           69    +0
6    Line Of Duty         3    60.0    6    5.70     1.5   78    74           74    -4
7    Guy Alexander        3    52.0    7    7.70     1.5   60    58           58    -2
8    Service Ace          3    60.0    8    8.20     1.5   79    74           74    -5
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Millahue 78 81 74 +7 1.5 -
2 Que Shiraz Line 78 72 78 -6 1.5
3 Night Ruler 81 75 77 -2 1.5 -
4 Gentleman Joe 78 83 77 +6 1.5 -
5 Policy Target 69 66 69 -3 0.0 -
6 Line Of Duty 78 75 74 +1 1.5 -
7 Guy Alexander 60 72 58 +14 1.5 -
8 Service Ace 79 73 74 -1 1.5 -
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