Manager Joe Girardi said that he sees Frieri having a legitimate chance to make the roster.
"This is a guy that saved a lot of games," Girardi said. "I know he pitched well in the WBC. Some of our people saw him, so he's going to get an opportunity here."
Frieri compiled a 3.55 ERA with 73 saves over 298 big league appearances from 2009-15 with the Padres, Angels, Pirates and Rays. Frieri will wear uniform No. 50.
Bryan Hoch has covered the Yankees for MLB.com since 2007. Follow him on Twitter @bryanhoch and on Facebook. This story was not subject to the approval of Major League Baseball or its clubs.