Roth's contract was purchased from Triple-A Round Rock on Sunday.

EDGE Analysis

The Rangers opened up a 40-man spot for Roth by moving Colby Lewis (strained lat muscle) to the 60-day DL, and the 26-year-old left-hander will replace Luke Jackson, who was demoted to Double-A Frisco in a corresponding move, on the 25-man roster. Roth compiled a 2.66 ERA and 1.06 WHIP in 81.1 innings while working primarily as a starter at Triple-A, but the Rangers plan on using him as a long reliever while he remains in the big leagues.