"The Nationals continue to look for a center fielder, and B.J. Upton of the Rays is one of their targets, according to a baseball source.

Upton, a Virginia native and Ryan Zimmerman's childhood friend, is considered an excellent defensive center fielder, but is having a down year at the plate, hitting .230 with seven home runs and 28 RBIs.

However, according to the source, Nationals general manager Mike Rizzo believes a change of scenery would help Upton's career. "