 28-year-old left-hander David Peterson, 4-1 in his career against the Nationals, 10 games, 7 starts with a .353 ERA. Lindor, Bader, Martinez, Alonzo, Vientos, Taylor, Alvarez, Iglesias, and McNeil for the Mets. With Peterson on the mound for the Nationals, C.J. Abrams leads off at shortstop. Batting second, right fielder Lane Thomas. The D.H., Harold Ramirez, batting third. Batting fourth at first base, Joey Manessis. Ildemar Vargas, the second baseman, batting fifth.