The Blue Jays recalled Lee from Triple-A Buffalo on Wednesday.
Lee will make his way to the majors with the club in need of some relief help out of the bullpen. With Buffalo, the 27-year-old has posted a 2.20 ERA, 1.13 WHIP and 40:18 K:BB over 45 innings this season. Toronto demoted Chad Dallas to Buffalo in order to make room for Lee on the active roster.