CREATE TABLE table_68558 ("Season" TEXT, "Competition" TEXT, "Round" TEXT, "Opponents" TEXT, "Home leg" TEXT, "Away leg" TEXT, "Aggregate" TEXT)

Name the competition for motherwell opponents
SELECT "Competition" FROM table_68558 WHERE "Opponents" = 'motherwell'
SELECT "Competition" FROM "table_68558" WHERE "Opponents" = 'motherwell'