Official NHA Assessment

Race 4: RACEHORSE OWNERS ASSOCIATION MIDDLE STAKES (For horses with nett rating of 101 and below)

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Line Horse
Imperial Master
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
5 / 9
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    Thunee Playa         4    54.0    1    0.00     7.0   84    78           78    -6
2    Imperial Master      4    58.0    2    0.70     7.0   93    93           93    +0
3    Strewn Sky           2    56.0    3    0.75     0.0   88    102          102   +14
4    Poets Warrior        5    58.0    4    4.25     0.0   90    102          102   +12
5    Millahue             3    56.0    5    4.75     10.0  88    76           78    -10
6    Weather Wizard       3    54.0    6    5.75     10.0  85    72           75    -10
7    Flying Bull          4    62.0    7    23.75    7.0   100   94           94    -6
8    Sugar Blast          2    62.0    8    39.75    0.0   101   108          108   +7
99   Kudzu                2    50.0    99   0.00     0.0   -     84           84    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Thunee Playa 84 107 78 +29 7.0 -
2 Imperial Master Line 93 90 93 -3 7.0
3 Strewn Sky 88 69 102 -33 0.0 -
4 Poets Warrior 90 114 102 +12 0.0 -
5 Millahue 88 81 78 +3 10.0 -
6 Weather Wizard 85 81 75 +6 10.0 -
7 Flying Bull 100 98 94 +4 7.0 -
8 Sugar Blast 101 102 108 -6 0.0 -
99 Kudzu - 80 84 -4 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