Arrieta homers, pitches 7 innings to lead Cubs over Arizona

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Jake Arrieta #49 of the Chicago Cubs hits a two run home-run against the Arizona Diamondbacks during the second inning of the MLB game at Chase Field on April 10, 2016 in Phoenix, Arizona.  (Photo by Christian Petersen/Getty Images)

Jake Arrieta #49 of the Chicago Cubs hits a two run home-run against the Arizona Diamondbacks during the second inning of the MLB game at Chase Field on April 10, 2016 in Phoenix, Arizona. (Photo by Christian Petersen/Getty Images)

PHOENIX — Jake Arrieta homered and pitched seven innings, helping the Chicago Cubs finish off an impressive first week by beating the Arizona Diamondbacks 7-3 on Sunday.

Chicago is tied with Cincinnati for the best record in the NL at 5-1. The Cubshost the Reds in their home opener Monday night at Wrigley Field.

Arrieta (2-0) allowed three runs and eight hits, striking out six. The reigning NL Cy Young Award winner gave himself a boost with a two-out, two-run homer in the second inning off Shelby Miller (0-1).

Arrieta hit two home runs in 2015 and has three in his career.