Alfaro joined the Phillies after batting just .241 at triple-A Lehigh Valley with a .649 OPS in 324 at-bats. He can not be optioned to the minor leagues next season, which almost makes him a lock to start 2018 with the Phillies. Alfaro has a great arm, but there are still concerns about his defense and game calling. An extended look in the majors could answer some questions.