Official NHA Assessment

Race 5: RACEHORSE OWNERS ASSOCIATION HYBRID STAKES (Open)

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Line Horse
Speed Machine
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
1 / 7
Within 2 points
Significant Diffs
5 / 7
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    Rockin' Ringo        6    58.5    1    0.00     0.0   103   119          109   +6
2    Aeneas               3    52.0    2    0.75     9.0   85    92           92    +7
3    Speed Machine        4    61.0    3    1.50     7.0   113   113          113   +0
4    Keep It Secret       3    54.0    4    4.75     9.0   95    92           92    -3
5    Somerset Maugham     4    56.0    5    5.15     7.0   98    100          100   +2
6    Crome Yellow         7    60.5    6    8.40     0.0   110   123          123   +13
7    Azores               5    57.0    7    9.65     0.0   100   116          116   +16
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Rockin' Ringo 103 107 109 -2 0.0 -
2 Aeneas 85 82 92 -10 9.0 -
3 Speed Machine Line 113 104 113 -9 7.0
4 Keep It Secret 95 80 92 -12 9.0 -
5 Somerset Maugham 98 97 100 -3 7.0 -
6 Crome Yellow 110 109 123 -14 0.0 -
7 Azores 100 100 116 -16 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