Cincinnati Reds closer Aroldis Chapman sustained facial fractures when he was struck in the face by a line drive Wednesday night.
In an exhibition game at Surprise, Ariz., a ball hit by Kansas City Royals catcher Salvador Perez caught the pitcher above the left eye.
Chapman was carried off the field on a stretcher, and he was taken to a local hospital. The Reds later announced that Chapman had broken bones in his nose and near his left eye, and that he was being hospitalized overnight for observation.
"He never lost consciousness," Cincinnati manager Bryan Price said. "He was able to communicate. He was able to move his hands, his feet, his legs. I'm not a doctor. I don't want to go much further than that. It got him pretty flush just above the left eye is what it looks like."
Reds outfielder Jay Bruce called the incident "the scariest thing I've ever seen."
"There are not words to explain how everyone is feeling right now," Bruce told told MLB.com. "It's terrible. It really is. It's dangerous. It happens every once in a while and you never know. It was completely inadvertent. None of that is happening on purpose. It's one of the dangers of the game."
Later Wednesday night, Reds second baseman Brandon Phillips tweeted that he was at the hospital and Chapman was "doing better."
Chapman, 26, is entering his fifth major league season. He was an All-Star in 2012 and 2013, recording 38 saves each year.
Wednesday's game was halted in the bottom of the sixth inning after the incident, with the Royals awarded a 6-3 win.
"The fun goes out of it all," Kansas City manager Ned Yost told MLB.com. "It's just not a productive atmosphere after that to continue the game. You're just not going to get anything out of it. And we all play this game but nobody wants to see anybody get hurt ever. When something like that happens, it's a feeling that affects both teams. I didn't want to go on, my players didn't want to go on. It's just one of those things."