It's very clear that Saturday wasn't this guy's first trip to the ballpark.
Seen here is a rather intuitive Chicago Cubs fan pulling the old switcheroo on a home run ball hit by Atlanta Braves batter Chris Johnson at Wrigley Field.
As you can see from the video, the fan came prepared with another non-home run ball to retrieve from his pocket before whipping it onto the field.
Amazingly, the guy came prepared with another non-home run ball too. You know, just in case he was able to snag another ball in the same game.