Blue Jays shortstop Jonathan Diaz was added to the major league roster ahead of the Wednesday doubleheader against Baltimore, per Shi Davidi of Sportsnet.
Diaz has spent four games in the majors this season, going hitless in five at-bats. In 118 games for Triple-A Buffalo, he's slashing .223/.328/.284. Donn Roach was designated for assignment to make room for Diaz on the 40-man roster.