Cardinals optioned RHP Carlos Martinez to Triple-A Memphis.
Carlos Martinez is moving back to the bullpen.
Carlos Martinez struggled in a no-decision against the Dodgers on Sunday night, allowing three runs on six hits over his four innings of work.
Carlos Martinez allowed four runs on seven hits over four innings of work in a loss to the Brewers on Sunday.
Carlos Martinez allowed four runs, all on home runs, on eight hits over six innings of a no-decision against the Pirates on Tuesday.
Carlos Martinez struck out six while holding the Giants to one run over five innings in a 7-2 victory Thursday.
Carlos Martinez pitched 4 1/3 innings and allowed one run Friday in a no-decision against the Dodgers.
Carlos Martinez allowed three runs and struck out five over five innings in a win over the Phillies on Sunday.
Carlos Martinez will start Sunday against the Phillies.
Carlos Martinez allowed just an unearned run and two hits over four innings in his start against the Mets on Monday.
Carlos Martinez will start on Monday against the Mets in place of the injured Adam Wainwright (elbow).
Cardinals manager Mike Matheny said Thursday that Carlos Martinez could become an option to replace Joe Kelly (hamstring) in the rotation if it turns out Kelly needs an extended absence.
Carlos Martinez struggled Wednesday in his first appearance since being sent to the pen, giving up two runs in two-thirds of an inning.
Cardinals manager Mike Matheny announced Sunday that Carlos Martinez will begin the season working as a setup man in the eighth inning.