Ellington was optioned to Triple-A New Orleans on Saturday.
The 26-year-old didn't concede an earned run during his brief stint in the majors, although with Edinson Volquez returning from the disabled list for Saturday's start, Ellington was the odd man out on the roster. However, the fact that he held his own in the big leagues could bode well for him down the road if the Marlins are in need of bullpen help again.