The Arizona Diamondbacks announced Tuesday they have optioned the right-hander to Triple-A Reno.
In five appearances (four starts), Bolsinger went 1-2 with a 6.08 ERA.
In a corresponding move, the D-backs recalled right-handed pitcher Chase Anderson from Double-A Mobile. The 26-year-old will be in his first stint in the Majors. The D-backs' pitcher of the month in April, he was 4-2 with a 0.69 ERA in 39 innings of work.
Pitching for Reno last season, Anderson went 4-7 with a 5.73 ERA.