The Athletics have selected the contract of right-hander Brian Schlitter from Triple-A Las Vegas, the team announced. He’ll take the 25-man spot of closer Blake Treinen, whom the A’s placed on the injured list Saturday, and give the club a full 40-man roster.

This will be Schlitter’s first time in the majors since 2015, when he threw 7 1/3 innings with the Cubs. Schlitter saw action with the Cubs in two other seasons (2010 and ’14), and combined for a 5.40 ERA/4.26 FIP with 5.27 K/9, 3.27 BB/9 and an excellent 56.5 percent groundball rate in 71 2/3 frames with the club. He hasn’t pitched in the majors for anyone else.

Now 33, Schlitter spent 2018 with the Dodgers’ Triple-A affiliate before he joined the A’s on a minor league deal in the offseason. Despite pitching the first couple months of this season in an environment that’s unkind to hurlers, he managed playable results over 34 2/3 innings before his call-up. Schlitter has posted a 3.89 ERA/4.54 FIP with 7.01 K/9, 1.3 BB/9 and a tremendous 67.9 percent grounder mark in Vegas.