The Washington Nationals and Los Angeles Dodgers figure to be buyers at the trade deadline to patch up respective shortcomings, though they've overcome those weaknesses to lead their divisions through the season's first half. Washington (48-39) has been carried offensively by Bryce Harper, who has an outside shot at winning a triple crown. Washington, which leads the New York Mets by two games in the NL East, ranks a respectable 11th in runs per game with 4.3, though injuries to Jayson Werth, Denard Span, Anthony Rendon and Ryan Zimmerman are especially beginning to take their toll.