CREATE TABLE table_15309 ("Club" TEXT, "Played" TEXT, "Drawn" TEXT, "Lost" TEXT, "Points for" TEXT, "Points against" TEXT, "Tries for" TEXT, "Tries against" TEXT, "Try bonus" TEXT)

what is the club that as 100 tries?
SELECT "Club" FROM table_15309 WHERE "Tries for" = '100'
SELECT "Club" FROM "table_15309" WHERE "Tries for" = '100'