Dan Duquette saw a weakness on the Orioles and he aggressively moved to add left-handed hitting.
Only five American League pitchers have more than 14 wins. Can Chen become number six?
Adam Jones scored on a short fly ball as the Orioles beat the Minnesota Twins 3-2.
The Orioles acquired Alejandro De Aza, a 30-year-old outfielder from the Chicago White Sox for two minor league pitchers and also picked up infielder Kelly Johnson from Boston.