Alvarez was optioned to Triple-A Round Rock on Thursday, John Blake of the Rangers' front office reports.
Alvarez was recently traded to the Rangers from Atlanta, and made just two appearances with the team before heading down to Triple-A. In 1.2 innings of work with Texas, Alvarez gave up five hits and three runs (two earned). During his time with the Braves, the 27-year-old posted a 3.00 ERA with a 1.07 WHIP over the course of 15 innings. Alvarez will likely be back with the team soon after spending some time at Round Rock.