The 35-year-old Olivo, released last July by the Marlins after playing in 33 games, peaked offensively in 2009 with 23 homers and 65 RBIs. He is viewed as veteran insurance for a catching corps headed by A.J. Ellis and backups Tim Federowicz and Drew Butera. Other catchers invited to camp are O'Brien, JC Boscan and Griff Erickson, who re-signed as a six-year free agent.
Previously announced invitees are pitchers Sam Demel, Daniel Moskos; and infielders Miguel Rojas, Clint Robinson and Brendan Harris. Rojas, a defensive specialist moving from shortstop, has a chance to make the big league club at second base.
Pederson was the top-rated Dodgers prospect at this time a year ago and management remains high on the left-handed hitter, who likely advances from Double-A to Triple-A this year. Pederson can play all three outfield positions and was under consideration for a big league promotion last season that eventually went to Yasiel Puig.
Lee has continued his steady, if unspectacular, advancement through the system in a third full season after being bought out of a college football career for $5.25 million. Lee now projects as a middle-of-the-rotation starter because he lacks any one overpowering pitch, but he has four solid pitches and the makeup to reach the Major Leagues as soon as 2014.
Reed, a left-handed pitcher out of Stanford, was a first-round pick in 2011 whose 3.84 ERA last year at Double-A Chattanooga was a better indication of his progress than a 4-11 record.
Stripling, a fifth-round pick in 2012 out of Texas A&M, is a right-handed starter who was 6-4 with a 2.78 ERA at Chattanooga.
O'Brien, 24-year-old son of former MLB catcher Charlie O'Brien, is known for his defense after three years in the system.
The 26-year-old Patterson, a right-handed pitcher drafted in the 29th round out of Southwestern Oklahoma State University, is coming off a 7-4, 3.03 season at Triple-A Albuquerque. He has a 32-11 career record in the Minor Leagues.
Ken Gurnick is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.