Davey Johnson stood in front of a tarp in the visiting manager's office, keeping his comments brief but thoughtful. After a few minutes, he stepped away, hugged a few people and shook a few hands before taking a seat behind the desk. He may have ended his career on a losing note, but the 70-year-old Johnson was perfectly at ease after a big-league career that spanned six decades. A.J. Pollock beat out a run-scoring infield single in the eighth inning and the Arizona Diamondbacks sent the Washington manager into retirement with a loss by beating the Nationals 3-2 on Sunday.