"Obviously he had a concussion; he has the fractures in the nose, and we don't think it's going to require [surgery], but we've got to make sure," Girardi said. "We've got to get that checked out, so he went back to New York to make sure his nose is going to be OK. We just felt that it was probably best that he didn't play for a few days."
Beltran was scratched from the starting lineup for New York's 5-4, 14-inning victory over the Indians after a batted ball ricocheted off a protective "L" screen in an indoor batting cage, striking him in the face.
"You don't expect that to happen when you're practicing," Beltran said after Wednesday's game. "I had a headache for the whole day. Now it's getting better. Hopefully ... I could be back soon."
Beltran had some bruising on the bridge of his nose, but relatively little swelling. Beltran, who traveled back to New York on Thursday and will be seen by a specialist, missed the first two games of the series against the Indians because of swelling behind his right knee.
In the first year of a three-year, $45 million contract, Beltran is hitting .216 with nine home runs and 28 RBIs in 61 games. He has been limited to designated-hitter duty since hyperextending his right elbow in April, requiring a stint on the disabled list.
"He was clearly frustrated last night. It's such a freak incident, and I think he was starting to swing the bat," Girardi said. "That's the frustrating part for him and us. I thought his timing was coming back, and all of a sudden, you have to sit down for a while. That's not what you want."
Bryan Hoch is a reporter for MLB.com. Follow him on Twitter @bryanhoch and read his MLBlog, Bombers Beat. This story was not subject to the approval of Major League Baseball or its clubs.