Porcello was optioned to Class A Lakeland, where he'll make his professional debut next month. Left-hander Macay McBride and right-hander Armando Galarraga were optioned to Triple-A Toledo.
All the other moves involved non-roster invitees who were assigned to Minor League camp. They included right-hander Jeff Gerbe, catchers Rob Bowen, Dusty Ryan and James Skelton, first baseman Jeff Larish, shortstop Danny Worth, and outfielders Matt Joyce, Wilkin Ramirez and Clete Thomas.
Porcello appeared in three games for the Tigers this spring, showing the potential that made the 19-year-old the highest touted high school pitcher in last summer's First-Year Player Draft. He pitched two perfect innings on Feb. 29 against the Blue Jays before allowing a run on three hits and two walks in 1 2/3 innings a week ago against the Pirates. He closed out with a flourish on Tuesday with two perfect innings against the Indians.
The move leave 46 players in camp with the Tigers. They'll cut down to their 25-man roster in just over two weeks.
Jason Beck is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.