The Marlins acquired Long and right-hander Jace Beck from the Cubs on Monday in exchange for left-hander Braxton Garrett, Meghan Montemurro of the Chicago Tribune reports.
Long had been blocked off at the Triple-A level while in the Cubs organization for the past couple seasons, but he's also seen a decline in his performance (108 wRC+) in 2026 compared to 2025 (131 wRC+). A righty-hitting first baseman and left fielder, Long is slashing .283/.364/.455 with 12 home runs and a 21.2 percent strikeout rate in 99 games as a 24-year-old.