Monday's move means Casilla receives a $200,000 buyout.
Casilla hit .214 with a homer and 10 RBIs in 61 games in his first season with Baltimore, which claimed him off waivers from Minnesota in November 2012.
The 29-year-old switch-hitter is a career .248 hitter in eight years in the majors. He also has 80 steals in 91 chances.
- Baltimore Orioles
- Alexi Casilla