Pearce, who hails from Lakeland, Fla., has spent time in the Major Leagues with the Pirates, Orioles, Astros and Yankees. He has played the corner-outfield spots, as well as first, second and third base.
While Pearce's numbers declined in 2015, he spent time on the disabled list due to an oblique strain.
Pearce has hit well at Tropicana Field, where he has a career .288 average, with seven home runs, 14 RBIs and a .644 slugging percentage in 23 games.
"He's going to get his at-bats," Silverman said. "We've seen firsthand what he can do. He's absolutely crushed Rays pitching. He loved hitting in Tropicana Field, and we're excited to have him in the lineup."
Bill Chastain is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.