I've talked to him on a couple of occasions. He's very realistic. He knows that no matter how good a team you've got, it's who's hot during tournament time.
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .