"I feel fine," Norris said. "I never really got dizzy and responded to all of the tests. Hopefully I can make the trip tomorrow and put all of this behind us."
Norris has been beaten up behind home plate of late. Most recently, he sustained a bruised forearm after being hit with a foul-tip in Friday's game, but his recent history with hitters' backswings is more the concern.
"It's not ideal; it's one of the hazards of the job," Norris said. "Ultimately, because the hitters aren't getting any shorter on their backswings, I'm going to have to make the adjustment and move back.
"A tick here or there off the mask is one thing, but this one got me pretty good on the head and not the helmet or the mask. For my own health, I think I'll have to step back."
Manager Bob Melvin added: "It's part of the game these days. It's not something we like."
Melvin also said that even had Norris been a foot further back on this particular instance, he may still have been struck by Herrera's bat.
"Most likely," said Norris, who also felt the brunt of Manny Machado's bat during the A's last road trip. "Until a crazy rule is invented where you have to have a limited backswing, it's just going to be the way it is. Until then, I have to bear with it or make an adjustment on my end."
Norris was replaced in the game by Stephen Vogt, who had already shuffled from right field to first base to right field. As a result of the switch, Oakland lost the use of the designated hitter.
Norris had singled in one of three eighth-inning runs that helped the A's overcome a late five-run deficit and tie the game at 6 in the ninth before losing in the 10.
Andrew Pentis is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.