Bryce Harper and Jayson Werth form a disparate, atypical pairing atop the Washington Nationals lineup. Werth does not fit the standard mold of a leadoff hitter — a 6-foot-5 veteran on a $126 million contract who once slugged 36 home runs. Harper does not fit the standard mold of anything — a 19-year-old force of nature helping carry his team toward the postseason. Big-ticket free agents are supposed to bat in the middle of the order, and teenagers are supposed to attend prom. Werth, 33, is the second-oldest position player on the team; Harper is easily the youngest. They cut an unconventional 1-2 figure, but still, together, they have been a perfect fit.