Baez was promoted to the big leagues on Tuesday, and he and Alcantara, who was called up July 9, will get the majority of playing time at second and center field, respectively. The organization has depth as far as position players go.
"We look at this offseason and next offseason as a window during which we have to add and will add impact pitching," Epstein said. "We won't look at it exclusively this offseason."
Could the Cubs add players off the waiver wire? Epstein said it's possible, but didn't expect any major moves.
"We are looking at August as a potential opportunity to acquire players who fit in the future, as most teams are," he said.
Carrie Muskat is a reporter for MLB.com. She writes a blog, Muskat Ramblings, and you can follow her on Twitter @CarrieMuskat. This story was not subject to the approval of Major League Baseball or its clubs.