Aroldis Chapman is optimistic about a swift return following a tight back that forced him to exit the eighth inning during the recent 4-3 victory over the Los Angeles Dodgers. Chapman, who has been enjoying a standout season with 18 saves and a 1.30 ERA, noted that he expects the spasm to ease within a few days. Manager Alex Cora echoed his confidence that there won't be a need for an injured list stint. In Chapman's absence, Jordan Hicks secured a save under pressure.