William Contreras hit the go-ahead run in the fifth, and the Atlanta Braves clinched their fifth consecutive NL East title by defeating the Miami Marlins 2-1 on Tuesday night. Atlanta, the defending World Series champion, earned a first-round bye as the No. 2 seed in the NL, behind the Los Angeles Dodgers. The Braves were 10 1/2 games behind the New York Mets at the start of June and lost four of five to New York in early August.