OAKLAND, Calif. (AP) Keeping active in the trade market, the Oakland Athletics acquired right-handed reliever Luke Gregerson from the San Diego Padres for outfielder Seth Smith.

It marked the second swap of the day for the two-time defending AL West champion A's and third in two days.

Gregerson will join a bullpen with new closer Jim Johnson, acquired from Baltimore on Monday night. Dealing Smith became a viable option when general manager Billy Beane acquired Craig Gentry from division rival Texas earlier Tuesday.