 Hitting third, designated hitter J.D. Martinez. Pete Alonzo bats fourth, Alonzo at first base. Mark Vientos, the third baseman, batting fifth. Batting sixth and catching, Francisco Alvarez. Jose Iglesias, the second baseman, batting seventh. Batting eighth and right field, Tyrone Taylor. And number nine batter is center fielder Harrison Bader. On the mound, 30-year-old right-hander Luis Severino. Two career starts against the Nationals. He's won them both with an ERA of 0.61.