• Dan Johnson was signed to a Minor League contract by the Orioles' Triple-A affiliate on Friday. The infielder hit .253 with 21 home runs and 69 RBIs in 133 games with the Scranton/Wilkes-Barre RailRiders (Yankees) this year.
• Ryan Flaherty, who was optioned on Tuesday to clear a roster spot for Wilson Betemit, has been transferred to Frederick from Class A Delmarva. Flaherty is expected back with the team when Frederick's season ends this Tuesday.
• Wei-Yin Chen, who was optioned to the Gulf Coast League for Kevin Gausman on Wednesday, will rejoin the team Saturday and will be added to the roster with Sunday's callups and start the series finale in New York.
• The Orioles are the first Major League team to post 100 errorless games by the end of August, according to STATS.