Manny Machado hit an RBI single during the five-run first inning and homered leading off the third for the San Diego Padres, who got a final tune-up for the postseason by routing the Arizona Diamondbacks 12-4 on Sunday for a three-game sweep. It’ll be the first time they’ve met in the postseason since the 1984 National League Championship Series, when the Padres rallied from an 0-2 deficit to beat the Cubs in five games and advance to their first World Series. San Diego is 3-0 all-time in wild card series.