user: Question: Who is the opponent for the 2011 season With a decision of W?
Columns: ['Season', 'Pitcher', 'Decision', 'Opponent', 'Location']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1977', 'Diego Seguí Category:Articles with hCards', 'L', 'California Angels', 'Kingdome']
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Decision" = 'W' AND "Season" = '2011';