German was recalled by the Yankees following Saturday's game.
The 24-year-old right-hander will get his first big-league opportunity, likely piggybacking with Chad Green in Sunday's series finale against Baltimore. German can provide several innings out of the bullpen with Green on a pitch count. He tossed 5.2 innings of one-run ball with seven strikeouts and two walks in his most recent start for Triple-A Scranton/Wilkes-Barre.