Archie Bradley was struck in the face by a line drive Tuesday night, leading to sinus cavity damage.
The Arizona Diamondbacks rookie hit the ground immediately after a second-inning shot off the bat of Colorado's Carlos Gonzalez hit him above the jaw on the right side of his face.
The 22-year-old stayed face down for several minutes as trainers attended to him and teammates squatted near the mound. He was able to get to his feet, walk off the mound and let the crowd know he was OK with a thumbs-up gesture.
He was released from a Phoenix hospital and back with his teammates before the end of the game.
"I tried to throw a curveball in there for a strike and I saw the pitch going towards the plate, then I woke up and I was laying down," Bradley said. "I got myself together and opened my eyes. I could see, wiggled my feet and the next thing I know the trainers are there."
Gonzalez was distraught after the game, saying his night was ruined and that he intended to visit Bradley.
"That is one thing you see once in a while on the diamond that you really wish you never see when you are playing," Gonzalez said. "For me as a hitter, it's a nightmare. It's something you don't try to do. Seeing one of those guys going down, especially a guy like him, who is really young and starting his career."