Chen pitched on Monday in a Minor League game, and he's coming off a 2013 season in which he went 7-7 with a 4.07 ERA in 23 starts. He is 19-18 with a 4.04 ERA in 55 career games.
Brittany Ghiroli is a reporter for MLB.com. Read her blog, Britt's Bird Watch, and follow her on Twitter @britt_ghiroli. This story was not subject to the approval of Major League Baseball or its clubs.