Miami Marlins right-hander Pablo López will carry a majors-leading 0.52 ERA into his start at Washington. Nationals righty Erick Fedde, meanwhile, enters with a 6.75 ERA. How dominant has López been in 2023? He has given up just one earned run and a total of 10 hits across 17 1/3 innings through three appearances so far this season. His record is 2-0. In his last outing, López struck out nine batters over seven scoreless innings in a 5-0 victory over the St. Louis Cardinals on Thursday — less than a week after getting married on a day off for the Marlins.