The Red Sox entered Tuesday with a three-game lead in the American League East with 12 games remaining. Smith earned his first save of the season in Monday's wild 10-8 victory in 11 innings over the Orioles.
"I think it's very possible," Red Sox manager John Farrell said of Smith being part of the postseason plans. "The more outings like he had last night -- that was a very powerful inning. That was a very good inning -- particularly against a very productive right-handed-hitting lineup that handles right-handed pitching well. That late action putting the ball on the ground is pivotal.