Jake Westbrook heads to disabled list, John Gast will make major league debut on Tuesday

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Cardinals general manager John Mozeliak told KMOX on Sunday that right-hander Jake Westbrook has been placed on the 15-day disabled list with right elbow inflammation and that prospect John Gast will be called up from Triple-A Memphis on Tuesday to start in Westbrook’s place against the Mets.

Westbrook presumably developed the elbow issue in his start Wednesday against the Cubs. It was his worst outing of 2013, as he lasted a season-low 5 1/3 innings and allowed four runs (three earned) on nine hits. The 35-year-old was given a cortisone shot Sunday morning and will try to throw later this week.

Gast, a 24-year-old left-hander, has posted an exceptional 1.16 ERA, 1.06 WHIP and 35/13 K/BB ratio across 38 2/3 innings (seven starts) this season at Triple-A Memphis. He was a sixth-round pick of the Cardinals in the 2010 MLB Amateur Draft out of Florida State University.