Anthony Rizzo hit a two-run homer, Miguel Montero and Ben Zobrist each added home runs, and the Chicago Cubs recovered after losing the first game of the series, beating the Boston Red Sox 7-4 on Saturday.
Kris Bryant hit two hits and scored twice for the Cubs, who gave offensive support to a good opening for John Lackey, a former right-hander for the Red Sox, with whom he won the 2013 World Series.
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Lackey (2-3) allowed four runs in six innings. He had missed three consecutive starts.
Hanley Ramirez and Andrew Benintendi hit home runs in Boston, which has the smallest number of big-league bounces in the majors.
Steven Wright (1-3) received five runs and seven hits in six innings and one-third.
Wade Davis resolved the ninth inning to earn his sixth save.
For the Cubs, the Venezuelan Montero of 4-2 with an annotated and a driven.
For the Red Sox, the Dominicans Hanley Ramirez of 4-1 with an annotated and one impelled, Marco Hernandez of 4-1. Christian Vazquez of 4-1.