user: Question: What is the lowest final score of the american cup competition before 2009?
Columns: ['Year', 'Competition Description', 'Location', 'Apparatus', 'Rank-Final', 'Score-Final']
Types: ['real', 'text', 'text', 'text', 'real', 'real']
Sample row: [2009.0, 'American Cup', 'Chicago, IL', 'All around', 2.0, 59.6]
SQL:

assistant: SELECT MIN("Score-Final") FROM "Table" WHERE "Competition Description" = 'american cup' AND "Year" < 2009.0;