Bubic was recalled from Triple-A Omaha to start Saturday's game against the Astros.
Bubic hasn't fared particularly well in the majors this year, as he's posted a 12.83 ERA and 2.25 WHIP in 13.1 innings over six appearances (five starts). He settled for a 6.59 ERA in 13.2 innings over his last three starts in the minors, but he'll get another shot as a starter with the big-league club since Zack Greinke (elbow) is sidelined until mid-June.