The Texas Rangers are recalling pitcher Nick Martinez from AAA Round Rock, per the beat guys on Twitter, and he is supposed to be active tonight. To make room for Martinez, the Rangers are optioning Drew Robinson to AAA Round Rock.
With Matt Bush returning to Arlington due to a shoulder issue, the bullpen was short handed, and so it was anticipated a move would be made today to fortify things. Robinson was the obvious choice to go down, as he was the fourth man on the bench, was not getting playing time, and was likely being sent down Saturday anyway when the Rangers needed a fifth starter.
I had thought that Tanner Scheppers would be activated from the disabled list, but Martinez gives them a multi-inning option who can start Saturday if he isn't used in the meantime.