CREATE TABLE table_60660 ("Season" CLOB, "League" CLOB, "Finish" CLOB, "Wins" CLOB, "Losses" CLOB, "Pct." CLOB)

What is the league with 0 losses?
SELECT "League" FROM table_60660 WHERE "Losses" = '0'
SELECT "League" FROM "table_60660" WHERE "Losses" = '0'