PHOENIX — Shohei Ohtani matched his career high with his 54th home run, Freddie Freeman went deep twice and the Los Angeles Dodgers clinched their 12th National League West title in 13 years by beating the Arizona Diamondbacks 8-0 on Thursday.

Ohtani’s home run splashed into the Chase Field swimming pool behind the right-center wall for a 6-0 lead in the fourth inning. The two-run shot gave him 101 RBIs and matched his career-best home run total with the World Series champion Dodgers last year. He has scored a big-league-high 144 runs.

The Dodgers, who clinched a postseason berth last week, won their fourth straight division title.

The Diamondbacks (80-79) fell 1¾ games behind the New York Mets (81-77) for the final NL wild-card spot and also are one game back of the Cincinnati Reds (81

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