The Marlins on Monday optioned left-hander Cody Ege to Triple-A New Orleans.
The 24-year-old Ege allowed four runs in three innings over five appearances for Miami this season.
No corresponding move has been announced, but the Marlins are expected to bring up a reliever before Tuesday's game against the D-backs. A strong possibility is righty Nefi Ogando, who has a 4.05 ERA in six games this year for New Orleans.