Showalter got down to Bowie, about 30 minutes from Camden Yards, after the Orioles beat Texas in their late afternoon game on Saturday. He watched Johnson throw for a second consecutive day and give up one run on one hit in one inning.
Johnson is on the 60-day disabled list, dating back to May 28, with elbow inflammation. He was expected to be the team's setup man once again, but the Orioles lost both Johnson and closer Michael Gonzalez early in the season, which crushed the bullpen.
"He throws good," Showalter said. "He's getting close. That was his first back-to-back outing, so that's one of the reasons why I wanted to see it. It was good."
Showalter said the Orioles will see how Johnson feels Sunday. He is scheduled to throw next in the middle of the week. If everything goes well, they have to decide when to bring him back.
"The question is whether you bring him up before Sept. 1 or not," Showalter said. "It was good to see him. He certainly looks the part -- good-looking pitcher."