OK, OK. As you can see in the video below, it wasn't a clean grab, since it's obvious the ball ricocheted into dude's cup. But so what? Both Padres play-by-play man Dick Enberg and his broadcast partner, Mark Grant, knew what had to be done. And, just like that, dude obliged.
Then again, dude probably would have done the same even if the ball hadn't bounced directly into his beer. These days, drinking quickly and heavily has got to be the best way to deal with being a baseball fan in San Diego.