Per T.R. Sullivan, the Rangers have optioned Omar Beltre to AAA, and recalled Doug Mathis.
I can't say this is particularly surprising...the Rangers need another long man in the bullpen right now, with Dustin Nippert having thrown a lot of pitches yesterday, and I had some doubts about whether they'd go back to Beltre for Saturday's start.
This now leaves open the question of who gets the ball on Saturday against Baltimore. Matt Harrison was optioned on June 30, and has to be in the minors 10 days, so I believe he could be recalled on Saturday, July 10. Otherwise, Mathis or Nippert would likely start.