Cubs 6, Rockies 2
CHICAGO — Jake Arrieta pitched eight scoreless innings and the Cubs hit three home runs. Arrieta, the reigning NL Cy Young winner, struck out eight and allowed five hits in his home debut. He has not allowed a run in his past 48⅔ innings at Wrigley Field. The Cubs have won nine of 11 for their best start since they went 10-1 in 1969.