Yoshida is out of the lineup for Sunday's game against the Athletics due to an illness, Mac Cerullo of the Boston Herald reports.
Red Sox interim manager Chad Tracy said that a bug has been making its way around the clubhouse, and Yoshida appears to be the latest victim. Though the veteran slugger will remain out of the starting nine for a second straight game, he may have been on the bench anyway as the Red Sox give Wilyer Abreu (calf/shin) a day off from playing defense by keeping his bat in the lineup at designated hitter.