Johnson went 2-for-5 with three runs. He also stole three bases, picking up where he left off after leading the Minor Leagues with 84 stolen bases this season.
Johnson said he hasn't changed his approach on the bases all season. In the AFL, he is trying to take a more consistent lead off first base every time.
"It's the same old, same old, man," Johnson said. "I've done the same thing all year. I'm just reacting to what I see. I didn't have to change anything."
Semien served as the designated hitter and went 2-for-4 with two RBIs. His two-out, RBI single in the ninth inning scored the game-tying run.
Though the AFL season has just begun, Johnson said he already feels comfortable with his new teammates. Now, he wants to improve as a player and enjoy the experience of being around so many top prospects.
"The goal is to get better and to work hard," Johnson said. "Everyone is really fun to be around, and we're having a good time so far."
Teddy Cahill is a reporter for MLB.com. Follow him on Twitter at @tedcahill. This story was not subject to the approval of Major League Baseball or its clubs.