>> it's so stressful. you are not used to having a lot of hair. it's so great. you know. you have your opportunity to 5-4, then you come in the 8th or 9th. and thinking about those 3 outs. reporter: so much focus will be on the players. there is also a lot of focus on what's behind the scenes. we had a chance to catch up with the mlb's authenticating team to make sure no one is collecting unauthenticated items. it could be game use bats, baseballs, jerseys, dirt, as long as the authenticator is