Nationals prospect Bryce Harper made a mistake in judgment on Monday night. Harper blew a kiss to the opposing pitcher after hitting a home run in Hagerstown's 3-2 loss to Greensboro in the Class A South Atlantic League. With the game scoreless in the sixth inning, Harper hit a home run to right-center field and took a few seconds to admire his handiwork. Greensboro pitcher Zachary Neal apparently didn't care for Harper's display and let Harper know how he felt as he rounded the bases. Harper replied by puckering up in Neal's direction as he reached home plate. On ESPN's "SportsCenter," Baseball Hall of Famer Mike Schmidt advised Harper to "tone it down and play the game." "I would say Bryce, if you're going to hit a lot of 'em ... you'd better learn not to show up the pitcher because it's just going to get tougher and tougher on you if you watch your home runs," Schmidt said. "Just hit your home runs and hit 'em like you're used to hitting 'em, not like you're surprised when you hit one."