Urena was optioned to Triple-A New Orleans on Wednesday, Joe Frisaro of MLB.com reports.
Urena has been terrible for the Marlins this season, posting a 7.52 ERA and 1.77 WHIP to go along with just a 5.31 K/9 and 4.43 BB/9. The 24-year-old will try to get his season back on track at the Triple-A level.