Cincinnati Reds leftfielder Brennan Boesch stepped into the box following Anibal Sanchez's warmup pitches to lead off the top of the third inning on Monday night.

Just like any other inning in baseball.

But home plate umpire Tim Welke put up his arm to signal a timeout as everyone looked around in confusion.

On the broadcast, the announcers realized Detroit was missing a leftfielder as the camera cut to the Tigers' dugout. Justin Verlander jokingly signaled for a 30-second timeout as he and other players looked to the tunnel, waiting for someone to emerge. After 30 seconds or so (good call, Verlander), Tigers leftfielder Yoenis Cespedes came out of the tunnel, grabbed his glove and ran out to the field.

It turns out, Cespedes was in the bathroom, which Reds play-by-play man Thom Brennaman alluded to, but also seemed annoyed about.

"Well, you can guess, but you should make the team put in another player," Brennaman said.

Watch the video below: