In spring training in 2013, Maurer competed with Erasmo Ramírez, Jeremy Bonderman, and Blake Beavan for one of the final two spots in the Mariners' five-man starting rotation, behind Félix Hernández, Hisashi Iwakuma, and Joe Saunders.
Hisashi Owada | Hisashi Imai | Hisashi Yamamoto | Hisashi Iwakuma |