The moves Thursday came three days after the Rangers designated Lowe for assignment after the 39-year-old allowed 13 runs in 13 innings over nine relief appearances. Lowe made the team in spring training, and signed a minor league deal.
The 31-year-old Teahen will join Triple-A Round Rock in Memphis on Friday. He's a career .264 hitter in 831 games with Kansas City, the Chicago White Sox and Toronto.
Teahen was released by Arizona on Monday. A trade with Cincinnati on May 1 was rescinded because of a right shoulder strain that put Teahen on the disabled list at Triple-A Reno from May 4-11.