Jake Arrieta and five relievers combined to hold the Cardinals scoreless as the Cubs picked up a 3-0 victory against their rivals in the second of three at Wrigley Field. Arrieta made it through five-and-a-third innings, while reliever Brian Schlitter earned the win and Hector Rondon locked up his third save. The offense came from a Junior Lake two-run homer and an Anthony Rizzo solo shot. Chicago has won three in-a-row to move to 11-and-17. Matt Adams had three of the Cards' seven hits. St. Louis was 0-for-6 with runners in scoring position and left eight men on base. Michael Wacha fell to 2-an-3 giving up two runs in six innings for the Redbirds, who fell to under .500 for the first time this season at 15-and-16.