PITTSBURGH -- Hot-hitting Andrew McCutchen had a pair of doubles and Edinson Volquez combined with two relievers on a seven-hit shutout as the Pittsburgh Pirates beat the Chicago Cubs 4-0 on Thursday night in a game delayed twice by rain.

McCutchen continued his torrid June by going 2-for-4 to stretch his hitting streak to eight games. The center fielder is batting .429 in 11 games this month with nine doubles, six home runs and 14 RBIs.

Volquez (4-5) scattered seven hits while walking two and striking out five. He improved his career against the Cubs to 7-0.

Left-hander Tony Watson and right-hander Jared Hughes finished with one scoreless inning each.

Rain delayed the start of the game for 21 minutes and halted play in the eighth inning for one hour, 14 minutes.

The Pirates beat Chicago for the 11th time in the teams' last 14 meetings at PNC Park by winning three games in the four-game series.

The Cubs fell to 11-23 in road games, the worst mark in the major leagues, and have lost 14 of their last 20 away from home. They have not won a road series all season.

Jeff Samardzija (2-6) entered the game with a 0.69 ERA in five career starts in Pittsburgh but took the loss as he allowed four runs and nine hits in six innings with two walks and seven strikeouts. It was just the fourth time in 14 outings this season in which he did record a quality start.

In his last six starts against the Pirates, Samardzija is 0-4 but the Cubs have scored a combined five runs in those games.

Third baseman Luis Valbuena and second baseman Darwin Barney had two hits each for the Cubs. Valbuena is 13-for-28 (.464) with five doubles in his last nine games.

McCutchen was in the middle of two-run innings in both the fourth and fifth that put the Pirates ahead 4-0.

In the fourth, McCutchen doubled with one out and scored on catcher Russell Martin's double. Shortstop Jordy Mercer hit a sacrifice fly two batters later.

McCutchen then hit a two-run double in the fifth after right fielder Gregory Polanco and left fielder Starling Marte opened the inning with back-to-back singles.

NOTES: The Pirates selected the contract of INF Michael Martinez from Triple-A Indianapolis and optioned RHP Casey Sadler to the same club. The Pirates wanted to add a middle infielder because 2B Josh Harrison was unable to start after suffering a mildly sprained right ankle Wednesday. ... The Cubs signed veteran C Yorvit Torrealba to a minor league contract, and he will report to their extended spring training camp in Mesa, Ariz. Torrealba went to spring training with the Los Angeles Angels as a non-roster player but asked for his release when he did not make the major league club. ... Pittsburgh RHP Gerrit Cole threw 20 pitches off the bullpen mound Thursday as he continues to rebuild arm strength after going on the disabled list, retroactive to June 4, with right shoulder fatigue. ... Pirates 2B Neil Walker returned to the team three days after undergoing an appendectomy and is optimistic he will be able to return June 24, the first day he is eligible to come off the disabled list. ... Chicago opens a three-game series Friday night at Philadelphia with RHP Jake Arrieta (1-1, 2.50 ERA) facing RHP Roberto Hernandez (2-4, 4.35). ... The Pirates travel to Miami for a three-game series with the Marlins that begins Friday night with LHP Jeff Locke (0-1, 5.11) facing RHP Nathan Eovaldi (4-2, 3.27).