Ober was recalled Saturday from Triple-A St. Paul.
Ober will replace the injured Kenta Maeda (triceps) in the Twins' starting rotation, beginning Saturday afternoon against the Royals. The 27-year-old right-hander tossed 5.2 innings of one-run ball last Sunday versus the Nationals and has also been pitching well this season at the Triple-A level. He should make for an attractive pickup in most standard fantasy formats.