CHICAGO -- The Cubs have placed left-hander Drew Smyly on the bereavement list and brought up right-hander Robert Gsellman from Triple-A Iowa.

Smyly was slated to start Tuesday night's game against the Chicago White Sox at Wrigley Field. Right-hander Scott Effross got the call instead, beginning a bullpen day for the Cubs.

Left-hander Locke St. John was designated for assignment. He was optioned to Iowa on Sunday.

Gsellman, 28, went 0-1 with a 3.77 ERA in 17 games last season with the New York Mets. He agreed to a non-roster deal with the Cubs in March.