Reds flamethrower Aroldis Chapman lay on the field for several minutes after the Royals' Salvador Perez hit a liner off the Cincinnati hurler's head, prompting the immediate response of emergency personnel and the eventual canceling of the rest of the game in Surprise, Ariz. tonight. The above video is purportedly of the play in question.
Reds announcers reported Perez "flinched" after seeing the liner hit Chapman in the forehead. The Cincinnati pitcher remained moving throughout his on-field treatment, which those same announcers said suggested Chapman never lost consciousness. Pitchf/x data reports the pitch was a 99 mph fastball.
We will update this post as more information about Chapman's condition becomes available.
Update (11:47 p.m.):
Update (12:38 a.m.): Here's some video from Baseball Prospectus writer Ryan Parker. It doesn't show the ball actually hitting Chapman, but it's terrifying enough.