CREATE TABLE table_77154 ("Week" FLOAT, "Date" CLOB, "Opponent" CLOB, "Result" CLOB, "Record" CLOB)

What date was the opponent the Boston Yanks?
SELECT "Date" FROM table_77154 WHERE "Opponent" = 'boston yanks'
SELECT "Date" FROM "table_77154" WHERE "Opponent" = 'boston yanks'