Martinez has been confirmed as the starter for Tuesday's game against the Mariners.
It was assumed when Martinez was called up that he would be taking the spot vacated in the Rangers' rotation by the Yu Darvish trade, and that's now set in stone. Martinez last appeared in the majors on June 4 and has only managed five quality starts in his 11 outings for the Rangers this season, making him a desperation fantasy play. Moreover, it's likely that Tuesday's outing will only be a spot start; A.J. Griffin's (oblique) is ready to return from the 60-day disabled list and could be called upon to replace Martinez in the rotation as soon as Sunday.