Miller, 26, batted .276/.368/.588 with 32 home runs, 88 RBI and 16 stolen bases without being caught in 110 games for Triple-A Sacramento in 2011. He also appeared in seven games for the A's, going 3-for-12 with a home run.
Miller has batted .271/.351/.516 with 85 home runs and 253 RBI in 423 games at the Triple-A level in the last four seasons. His major league time also includes 20 games with the Kansas City Royals in 2010, when he batted .236/.300/.345. He made his major league debut in 2008 with the Marlins.
Jai Miller has the power, speed, base stealing skills and good athletic ability to be an asset in our outfield as he competes for a spot on our ballclub this spring, said Orioles Executive Vice President of Baseball Operations DAN DUQUETTE.
Snyder, 25, batted .261/.312/.406 in 114 games with Triple-A Norfolk in 2011. He also appeared in six games for the Orioles, going 3-for-13.
The Orioles 40-man roster remains full with these moves.