Zach Davies allowed five hits in seven scoreless innings, Rex Brothers got his first save in eight years and the Chicago Cubs held on to beat the Pittsburgh Pirates 3-2 on Friday, extending their winning streak to four. Joc Pederson had three hits and an RBI for the Cubs, who were coming off a three-game sweep of the World Series champion Los Angeles Dodgers. Javier Báez and David Bote had two hits each.