Cardinals demote Mitchell Boggs to Triple-A, call up prospect Carlos Martinez

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Mitchell Boggs has gone from taking over for Jason Motte as the Cardinals’ fill-in closer to being demoted to Triple-A.

The final straw came last night, as Boggs walked the only two batters he faced to give him more walks (12) than strikeouts (10) and 31 total baserunners allowed in 10.2 innings overall this season. Last year Boggs threw 73 innings with a 2.21 ERA and he had a combined 3.08 ERA in 201 innings from 2010-2012. Boggs actually went from fill-in closer to Triple-A demotion within the span of three weeks in 2011, although his struggles weren’t nearly as lengthy or pronounced back then.

To take Boggs’ spot on the roster and in the bullpen the Cardinals called up 21-year-old right-hander Carlos Martinez, who’ll be getting his first taste of the big leagues after ranking among the top-50 prospects by both Baseball America and MLB.com heading into the season. Martinez has been a starter throughout his minor-league career, posting a 2.74 ERA and 277 strikeouts in 260 innings, but he’ll be used out of the bullpen initially in St. Louis to give manager Mike Matheny another setup option in front of Edward Mujica and Trevor Rosenthal.