CREATE TABLE table_8289 ("Outcome" CLOB, "Date" CLOB, "Tournament" CLOB, "Surface" CLOB, "Partner" CLOB, "Opponents" CLOB, "Score" CLOB)

Which tournament had an opponent of petra krejsov tereza smitkov ?
SELECT "Tournament" FROM table_8289 WHERE "Opponents" = 'petra krejsová tereza smitková'
SELECT "Tournament" FROM "table_8289" WHERE "Opponents" = 'petra krejsová tereza smitková'