Jordan Zimmermann, who is tied for the NL lead with eight wins and second in the majors with a 1.71 ERA, takes the mound against the Orioles. If you missed it, check out a feature story about him and his steel-cut demeanor and his budding stardom. He opposes right-hander Chris Tillman (4-2, 3.68 ERA). The Nationals are averaging five runs and 10.4 hits since he publicly admitted he wasn’t shaving his beard until the offense improved. Informed of the statistic Wednesday afternoon, he said: “I gotta keep it on here for a little while. Just a little while longer.” The lineups are here. Also, you know what to do here.