The Latest: Knebel to see doctor for arm, ‘go from there’

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The Latest on opening day (all times EDT):

5:45 p.m.

The Dodgers have chased Arizona's Zack Greinke with three homers in the fourth inning on opening day.

After Enrique Hernandez and Austin Barnes hit back-to-back homers, Corey Seager celebrated his return from Tommy John surgery with a solo shot that sent Greinke to the showers. The $206.5 million right-hander gave up seven hits and seven runs, including Joc Pederson's two-run homer in the second for the two-time defending NL champions.

Meanwhile, Hyun-Jin Ryu was stellar in the first four innings of his first opening day start, striking out six Diamondbacks and allowing one infield single. Arizona got only one ball out of the infield in the first four innings while falling behind 7-0.

—Greg Beacham reporting from Los Angeles.