September 10, 2014
Oakland Athletics' Craig Gentry is attend to by a member of the A's medical staff after colliding with Chicago White Sox first baseman Jose Abreu during the fifth inning of a baseball game Tuesday, Sept. 9, 2014, in Chicago. (AP Photo/Charles Rex Arbogast
Charles Rex Arbogast

CHICAGO (AP) Oakland Athletics catcher John Jaso remains out indefinitely with a concussion after visiting a specialist.

Manager Bob Melvin was hoping Jaso would be cleared to return after seeing Dr. Micky Collins in Pittsburgh on Wednesday. But the doctor wants Jaso to try a different routine.

Melvin said Jaso, sidelined since last month, will return to Oakland and won't resume baseball activities for at least a few days. It's too soon to speculate if he will miss the remainder of the year.

Jaso also sat out most of last season with concussion-like symptoms.

''I'm more worried about the person than I am the baseball player,'' Melvin said.

Jaso is hitting .264 with nine homers and 40 RBIs.

A's closer Sean Doolittle appears close to returning from a strained muscle in the rib area. He threw a side session Wednesday and Melvin said the All-Star lefty could be activated Friday.

Oakland outfielder Craig Gentry was feeling better but still experiencing symptoms after leaving Tuesday's game against the Chicago White Sox with a concussion. Nick Punto (hamstring) was available off the bench after being activated from the disabled list Tuesday.

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