Plefka will begin his seventh season of professional baseball in 2013. The 28-year-old was drafted by the Los Angeles Angels in round 47 of the 2006 MLB Amateur Draft out of Texas Tech University. He spent two seasons in the Angels organization before continuing his career in independent baseball.
The 6’8” right-hander has spent the majority of his career out of the bullpen.
In 2012 with the X’s, Plefka posted a 1-3 record, in 47.2 innings pitched, while striking out 43 batters and allowing only 17 free passes. He led the 2012 squad with a 3.96 earned run average, allowing only 21 earned runs to cross the plate. Before his stop in Sioux City, the former Texas Tech basketball player spent parts of the 2011 season in El Paso and Winnipeg. Collectively that year, Plefka posted a 4.50 earned run average in 50 innings pitched, while registering 42 strikeouts. He spent 2010 with North Division rival, the St. Paul Saints. In 43 relief appearances, the New Britain, CT native went 6-1 with a 2.65 earned run average, striking out 55 hitters in 57.2 innings of work.