CREATE TABLE table_70591 ("Date" CLOB, "Opponent" CLOB, "Score" CLOB, "Loss" CLOB, "Attendance" FLOAT, "Series" CLOB)

Can you tell me the Opponent that has the Series of 4-2?
SELECT "Opponent" FROM table_70591 WHERE "Series" = '4-2'
SELECT "Opponent" FROM "table_70591" WHERE "Series" = '4-2'