Segura initially took first base after he was examined by the training staff for several minutes. He then was replaced by pinch-runner Hector Gomez.
"That was really scary," Strop said.
Segura left after feeling nauseous, Brewers Manager Ron Roenicke said. Roenicke said Segura was doing "pretty good" and was expected to see another doctor Sunday night. A similar incident occurred April 7 when a ball hit Segura's helmet and struck his nose when the Brewers played Colorado.
"It's not a good thing," Roenicke said. "You hope a guy doesn't get a little tentative in what he's doing. He does such a nice job with the things we ask that you hope it doesn't start to bother him."
Yu Darvish wants to obtain dual citizenship
Pitcher Yu Darvish misses being on the road with his Texas Rangers teammates for reasons beyond fellowship as he recovers from season-ending elbow surgery.
The Japanese right-hander joked his English is suffering because he's not using it as much. Darvish said he wants to improve his command of the language enough to pursue dual citizenship.
"I asked the team if they can help me with my English," Darvish said through an interpreter, while noting that Miami's Jose Fernandez, a Cuban native, recently became a U.S. citizen.
"I would like to get the citizenship," Darvish said.
About six weeks removed from Tommy John surgery, Darvish is out of a brace and has moved from range-of-motion exercises to work on his shoulder and forearm. He said he didn't have as much pain as others he talked to about the procedure.
There is no timetable for Darvish to start throwing again.
Darvish says he has a positive mind-set as he settles in for a season without pitching. The majors' strikeout leader in 2013 sat out the last seven weeks of last season because of elbow inflammation.
"I have no frustrations at all," Darvish said. "I can't throw right now and it is what it is. I'm just cheering on my teammates right now."