The Baseball Lab: Why Is It Difficult To Catch A Pop-Up?

Boston Red Sox outfielder Mookie Betts is one of the best fielders on the team, but even he can sometimes struggle with a deep fly ball. Do you know why pop-ups are so difficult to catch?

“NESN Clubhouse” host Gary Striewski met up with University of Illinois professor Alan Nathan and learned why fly balls can be so tough to snag. Check it out in the video above.