The 28-year-old Casilla has played with the Twins since 2006. In 2012, the switch-hitter played a career-high 106 games, batting .241 with a home run and 30 RBIs.
Perhaps his most attractive quality to the Orioles is his speed. Last season, he stole 21 bases. In his major league career, he’s stolen 71 bases and has been caught just nine times.
“We like his defensive capability and we like his speed,” Orioles executive vice president of baseball operations Dan Duquette said. “He’s a very adept basestealer.”
Duquette says he doesn’t anticipate adding another second baseman to the mix.
“We should be fine with the people we have,” he said. “We have people here who can man the position.”
The Orioles reinstated pitchers Oliver Drake, Stu Pomeranz and Tsuyoshi Wada, Roberts as well as Nolan Reimold from the 60-day disabled list.
They outrighted outfielder Lew Ford, left-handed pitcher Zach Phillips and infielder Steve Tolleson to Norfolk.
The Orioles have 39 players on their 40-man roster.