Josh Naylor hit a two-out, bases-clearing double in the eighth inning to send the Seattle Mariners to the playoffs with a 4-3 victory over the Colorado Rockies on Tuesday night. The Mariners (88-69) won for the 15th time in 16 games to secure the team’s second postseason appearance since 2001. Seattle came into the game needing a win and a victory by the New York Yankees, who did their part by beating the Chicago White Sox.