Slump and all, Washington Nationals rookie Bryce Harper still etches a new line in history with every game. He has been through the highs of a rookie season — an all-star selection — and the lows — a slump that has challenged and frustrated him. He has been sent to the bench for days off to relax here and there, including Saturday, which doesn't sit well with someone used to playing every single day. In Sunday's rain-delayed 5-2 win over the New York Mets at Nationals Park, Harper looked like the 19-year-old prodigy who captured the imagination of Nationals fans and the attention of those across baseball with a torrid first two months of his major league career. He smashed a run-scoring triple in the third inning and crushed a leadoff home run in fifth inning — each of which moved him into elite company among major league players his age.