Walker Buehler allowed one run and struck out nine in seven innings to help the Boston Red Sox defeat the visiting Chicago White Sox 4-2 on Monday in a late-morning start on Patriots’ Day.

Buehler (3-1) allowed four hits, walked three and threw 100 pitches (63 strikes). Two of the four hits Buehler allowed came in the first inning, when he gave up his only run. Justin Slaten pitched a scoreless ninth to earn his third save.

Rob Refsnyder hit a home run for Boston, his first. Trevor Story had three hits for the Red Sox, while Kristian Campbell added two hits, including a two-run single.

The White Sox received a solo home run from Andrew Benintendi, who collected two of the team’s five hits. A Brooks Baldwin double in the second inning was Chicago’s only other extra-base hit.

Boston won three of the four games in series, while the loss dropped Chicago’s road record to 1-9.

White Sox starter Jonathan Cannon (0-3) surrendered four runs on six hits in six innings with four walks and four strikeouts.

Nick Maton led off the game with a single, moved to third on an Andrew Benintendi single and scored to give the White Sox a 1-0 lead on Edgar Quero’s groundout.

After Refsnyder’s solo home run tied the game in the second, the Red Sox took a 4-1 lead by scoring three times in the third. Jarren Duran doubled and scored on Trevor Story’s single to make it 2-1 before Campbell delivered a bases-loaded single that extended Boston’s lead to 4-1.

Benintendi, who began his MLB career with the Red Sox, capped the scoring when he homered against Aroldis Chapman in the eighth. It was his fourth homer of the year and just the sixth the left-handed Champman has allowed to a left-handed hitter in his career.

The White Sox were 0-for-10 with runners in scoring position.

The Red Sox won four of seven games against the White Sox to complete the season series between the teams.