PHILADELPHIA -- The Phillies have signed three more players to Minor League contracts with invitations to Spring Training: right-handers Sean O'Sullivan and Kevin Slowey, and first baseman Chris McGuiness.
O'Sullivan, 27, made three spot starts for the Phillies in 2014, going 0-1 with a 6.39 ERA in 12 2/3 innings. He spent the majority of the season with Triple-A Lehigh Valley, compiling a 6-10 record with a 4.30 ERA in 25 starts.
Slowey, 30, appeared in 17 games with the Marlins last season and had a 5.30 ERA before being designated for assignment in June. In 137 career appearances in the Majors, he's 43-36 with a 4.62 ERA. Slowey missed the majority of the 2011-12 campaigns with injuries.
McGuiness comes over from the Indians organization. He spent all of 2014 with Triple-A Indianapolis, hitting .264 with 31 doubles, nine home runs and 54 RBIs. He was named the Arizona Fall League's Most Valuable Player in 2012 after hitting .288 with four home runs and a league-best 27 RBIs in 25 games. He had a brief stint in the big leagues with the Texas Rangers in 2013, during which he batted .176 in 10 games.
The Phillies have now invited a total of 16 players to Major League Spring Training as non-roster invitees.
Austin Laymance is a reporter for MLB.com. Follow him on Twitter at @jalaymance. This story was not subject to the approval of Major League Baseball or its clubs.