The team also announced minor league deals Monday with outfielder Ryan LaMarre and right-handed pitcher Aaron Slegers and lefty D.J. Snelton who will also compete for jobs in spring training.
Right-handed pitcher Angel German and infielder Conrad Gregor agreed to minor league contracts but were not asked to big league camp.
Herrmann, 32, is a .205 career hitter who has spent portions of the past eight seasons with the Minnesota Twins, Arizona Diamondbacks, Seattle Mariners and Oakland Athletics.
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