The Cubs optioned Alzolay (side) to Triple-A Iowa on Saturday, Gordon Wittenmyer of the Chicago Sun-Times reports.
Alzolay failed to see any action in Cactus League play after entering camp behind the rest of the Cubs' pitchers due to an injury to his side. The right-hander has since resumed a throwing program, but it's unclear if he'll be ready to join the Iowa rotation once the regular season gets underway.