"Lex has good infield and basestealing skills and fits with [the] Orioles culture of good team defense," executive vice president of baseball operations Dan Duquette said.
Primarily a bench player last season, Casilla adds speed and versatility and can play second base, shortstop and third. The 29-year-old veteran batted .214 in 62 games for the O's in 2013 and is expected to compete for the utility infield spot.
Brittany Ghiroli is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.