CHICAGO — Jake Arrieta pitched four-hit ball into the eighth inning, and the Chicago Cubs beat the San Francisco Giants 2-0 on Sunday for a four-game sweep of the defending world champions.
Arrieta also tripled and scored in the second as the Cubs won for the 10th time in 11 games. Chicago's first four-game sweep of San Francisco since June 1977 increased its lead for the second NL wild card to 3 1/2 games over the reeling Giants.
Arrieta (13-6) struck out six and walked two in 7 2-3 innings. The right-hander is 7-1 with a 1.23 ERA in his last 10 starts dating to a four-hit shutout at Minnesota on June 21.