The Orioles have added Nate McLouth to their 25-man roster. McLouth would have been eligible to become a free agent had Baltimore not made the roster move by midnight on Friday. “It’s a great opportunity,” McLouth said before Saturday’s game. “I don’t know what my role is going to be and frankly I’m just looking forward to it whatever it’s going to be. I’m thankful for the opportunity and excited to get it started.” Baltimore designated Endy Chavez for assignment to create a roster spot.