user: Question: Which tournament included an opponent of Marinko Matosevic?
Columns: ['Outcome', 'Tournament', 'Surface', 'Opponent', 'Score']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Runner-up', 'Australia F4, Bairnsdale, Australia', 'Clay', 'Konstantinos Economidis', '3-6, 2-6']
SQL:

assistant: SELECT "Tournament" FROM "Table" WHERE "Opponent" = 'Marinko Matosevic';