CREATE TABLE table_15493 ("Club" TEXT, "Played" TEXT, "Drawn" TEXT, "Lost" TEXT, "Points for" TEXT, "Points against" TEXT, "Points" TEXT)

How many matches played are associated with 20 losses?
SELECT "Played" FROM table_15493 WHERE "Lost" = '20'
SELECT "Played" FROM "table_15493" WHERE "Lost" = '20'