Manny Machado homered and Jackson Merrill knocked in three runs as the San Diego Padres tuned up for the National League playoffs with a 12-4 rout of the visiting Arizona Diamondbacks on Sunday.

J.P. Sears (9-11) twirled 5 2/3 innings and threw a season-high 113 pitches for the win, allowing two runs on seven hits and three walks to go with four strikeouts. San Diego (90-72) boasts back-to-back 90-win seasons for the first time.

Brandon Pfaadt (13-9) was rocked for eight runs (seven earned) on six hits in four-plus innings, walking none and fanning five. Arizona (80-82) lost its last five games after being within one game of the final wild-card spot entering Wednesday's play.

Ketel Marte led off the game with a homer, his 28th of the year, but few highlights followed for the Diamondback

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