Johnson had struggled for the Orioles last season which eventually lead to a demotion out of the closer role, but the Athletics knew he had a productive history and given the relatively cheap asking price, they decided to bring him in.
So far the results have been less than spectacular as Johnson has been hit around in nearly ever appearance he’s made this season, forcing the team to remove him from the closer role.
Johnson out as closer for now.
The Athletics have yet to announce a fill-in or when Johnson would be able to get his job back (or if he can). It’s possible Oakland will run with a closer-by-committee approach which will likely involve Ryan Cook, Luke Gregerson and possibly Sean Dolittle.
Dolittle is a left hander and probably isn’t the top choice while Cook is fresh off the disabled list, so it might be best to play the matchups until Johnson is able to figure out his issues.