Yu Darvish makes his Los Angeles Dodgers debut when the top team in the majors takes on Jacob deGrom (12-4, 3.29 ERA) and the New York Mets in a marquee pitching matchup at Citi Field. The Dodgers acquired Darvish from Texas just before Monday's trade deadline. In a potential playoff preview, the Nationals visit the Cubs for a Wrigley Field matinee as the teams begin a three-game series.