Gerardo Parra took over in center field and played the rest of the Brewers' 15-5 loss.
"When I do my follow-through normal, I always let go with one hand. And I got stuck and I felt a pop," Gomez said of the swing in question. "When I felt it pop, it was a shooting pain. I had X-rays, which were negative, so it might be a nerve kind of twisted. Today, we don't think it's something bad."
Milwaukee's leadoff hitter for most of this season, Gomez is 4-for-20 so far on the Brewers' penultimate road trip, including a first-inning single Sunday on a bunt that Gomez popped up in the direction of third base. But he entered the day worth 4.8 wins above replacement, by the FanGraphs.com measure, good for seventh in the National League.
The Brewers are expected to have at least one outfielder, probably Logan Schafer, among their September callups for Monday's series opener against the Cubs at Wrigley Field. Gomez is "doubtful" for that game, Brewers manager Ron Roenicke said, and may return to neighboring Milwaukee for further testing.
Adam McCalvy is a reporter for MLB.com. Read his blog, Brew Beat, and follow him on Twitter at @AdamMcCalvy. This story was not subject to the approval of Major League Baseball or its clubs.