OAKLAND (CBS/AP) -- Jake Arrieta pitched eight innings of three-hit ball to get his first victory in over a month and the Chicago Cubs beat the Oakland Athletics 4-0 on Saturday.

Arrieta (13-5) was 0-3 in his previous five starts and 1-4 since ending a 20-decision winning streak June 22. He struck out four and walked one on 108 pitches.

The NL Central-leading Cubs have won five straight and 16 of 22. The A's have lost seven of eight.

Ben Zobrist's two-out two-run single off former A's teammate Sonny Gray broke a scoreless tie in the top of the third. Gray (5-11) left after five innings with soreness in his right forearm. He allowed two runs on five hits. Zobrist and Addison Russell had two hits each for the Cubs.

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