Gunnar Henderson has a patient approach at the plate, wisely watching for the right pitch to drive. On Sunday, fans who have been patient with the Orioles’ 21-year-old blooming star were rewarded with one of his best performances in the major leagues. Henderson — who hit just .189 through March and April but has batted over .300 for the past month, one-upped himself Sunday, totaling a career-high seven bases, including a 462-foot missile in the seventh inning.