The club has targeted multiple key positions of need over the last few weeks, including the middle of its bullpen. Shawn Armstrong became the newest addition for the Rangers at reliever, signing a one-year deal with Texas on Monday. Here are five things to know about Armstrong:

The busy Texas Rangers postseason continues. The Rangers have signed free agent relief pitcher Shawn Armstrong to a one-year contract. To make room for Armstrong, catcher Sam Huff was been designated for assignment.

Armstrong's addition to the Rangers' bullpen is a testament to the organization's ambition to build a competitive team. The Rangers have been active in the free-agent market and h

The Rangers are much more platoon oriented now with Pederson, the planned catching platoon of Heim/Kyle Higashioka and those versatile infielders including left-handed hitting Josh Smith and right-handed hitting Ezequiel Duran. Also, Pederson probably sits against most lefties. Carter might, at least at the outset, too.