With Adams' addition, the Orioles 40-man roster is now full.
Troy Patton and Chris Jakubauskas were demoted to make room for Adams and Reimold.
Showalter met Friday with Robert Andino, who had started the past two games at second base, and assured him that he remains in the team's plans even with Adams' addition. Showalter said Andino will start Saturday's game at second base.
The Orioles' top prospect, Manny Machado, who hasn't played since May5 because of a dislocated left kneecap, started baseball activities Friday at the team's minor league complex in Sarasota, Fla.
Outfielder Kyle Hudson was transferred from Double-A Bowie to Triple-A Norfolk, and infielder Buck Britton was transferred to Bowie from Single-A Frederick. Britton, the elder brother of Orioles pitcher Zach Britton, was hitting .341 for the Keys and leading the Carolina League with 30 RBIs.
Catcher Craig Tatum (shoulder) was removed from the minor league disabled list.