Last season, Bryce Harper essentially learned to be a major league center fielder on the fly, adapting to his first extended stint at the position at any level on the way to winning National League Rookie of the Year. Of the moves the Nationals made this offseason, perhaps none impacts the 20-year-old Harper as much as the arrival of Denard Span via trade from Minnesota, which will likely send Harper back to left field. During Saturday's fan festival at Walter E. Washington Convention Center, Harper said he's looking forward to playing beside Span in the outfield and batting behind him in the order, too. Span's "going to be great for us in center field, at the top of the lineup giving us some speed," Harper said. "He gets on base a lot and that's going to be good for our whole lineup." Next month, Harper will head to big league camp for the third straight season, and for the first time, he'll begin the spring with a starting outfield spot. After being called up from Class AAA Syracuse last April, he put together one of the finest seasons by a teenager in major league history.