Sounds crazy, but it happened. Even crazier is that the blooper was caught on video, clear as day. The reactions here — from the initial crowd enthusiasm to the umpire and catcher, who immediately realized Mondesi messed up — are priceless.
UPDATE: The video was removed from YouTube, but Deadspin, which picked up on the story after the Indy's original post, grabbed another version from KRTV. You can watch it here.