Rob Manfred believes this generation of players will make its own unwritten rules on what emotion is acceptable to show on the field.

Goose Gossage has made headlines for criticizing Jose Bautista and Bryce Harper for showing emotion on the field.

"I think to the extent that you believe, and I actually do, that Bryce Harper is a spokesman for this generation, I suspect that you will see more exuberance from our players on the field," Manfred said Thursday during a meeting with the Associated Press Sports Editors.

"I think it's a good thing. I think that to the extent that you're trying to market to a younger audience, our younger players taking control of the definition of those unwritten rules is a lot better than some guy who's 67 years saying I did it that way and you ought do it the same way."