Martinez will start Tuesday's game against the Astros, Stefan Stevenson of the Fort Worth Star-Telegram reports.
It will be the first start since May 30 for Martinez, who has made one lone appearance out of the bullpen over the last two weeks. Martinez will enter the rotation in place of Dillon Gee, who faltered in his first start of the season last week against the Mets, giving up four runs on eight hits and four walks over 3.1 innings. With Tyson Ross (shoulder) on track to come off the disabled list and rejoin the Rangers' rotation over the weekend, manager Jeff Banister will likely have to decide whether to go with Martinez or Austin Bibens-Dirkx as the team's fifth starter until either Cole Hamels (oblique) or A.J. Griffin (oblique) is ready for activation.