Campbell was optioned to Triple-A Tacoma on Monday, Ryan Divish of The Seattle Times reports.

Campbell was recalled from Triple-A Tacoma on Friday.

Campbell was added to Oakland's 60-man roster pool Wednesday.

Campbell signed a minor-league contract with Oakland, which includes an invitation to spring training.

Campbell signed a minor-league contract with the Athletics which includes an invitation to spring training, Susan Slusser of the San Francisco Chronicle reports.

Campbell agreed to a contract earlier this month with the Hanshin Tigers of the Japanese Central League, ESPN.com's Adam Rubin reports.

Campbell was outrighted off the 40-man roster Wednesday, ESPN's Adam Rubin reports.

Campbell will be recalled from Triple-A Las Vegas on Tuesday, Marc Carig of Newsday reports.

Campbell will be added to the Mets' roster as the 26th man for Game 2 of Tuesday's doubleheader against the Pirates, Adam Rubin of ESPN New York reports.

Campbell was optioned to Triple-A Las Vegas on Tuesday, Adam Rubin of ESPN New York reports.