Jason Heyward, Austin Barnes and James Outman homered to lead the Los Angeles Dodgers to a 6-1 win against the Seattle Mariners on Sunday. Heyward also had a double, single and two RBIs, and Amed Rosario was a homer shy of the cycle as the Dodgers completed a three-game sweep one day after clinching the NL West title. J.P. Crawford had two hits and drove in the only run for the Mariners, who have lost seven of nine in the midst of a playoff race.