Six-year-old Maverick Schutte of Cheyenne, Wyo., who has undergone more than 30 surgical procedures because of a congenital heart defect, celebrates with Boston Red Sox designated hitter David Ortiz after throwing out the ceremonial first pitch prior to a baseball game against the Oakland Athletics at Fenway Park in Boston, Wednesday, May 11, 2016. Ortiz fulfilled a promise to hit a home run just for Schutte in a recent game against the New York Yankees. At left is former Red Sox first baseman Kevin Millar. (AP Photo/Charles Krupa)
Six-year-old Maverick Schutte of Cheyenne, Wyo., who has undergone more than 30 surgical procedures because of a congenital heart defect, celebrates with Boston Red Sox designated hitter David Ortiz after throwing out the ceremonial first pitch prior to a baseball game against the Oakland Athletics at Fenway Park in Boston, Wednesday, May 11, 2016. Ortiz fulfilled a promise to hit a home run just for Schutte in a recent game against the New York Yankees. At left is former Red Sox first baseman Kevin Millar. (AP Photo/Charles Krupa) Credit: Charles Krupa

Boston — Jackie Bradley Jr. had two home runs and six RBIs to extend his hitting streak to 17 games, and the Boston Red Sox completed a three-game sweep of the Oakland Athletics with a 13-3 win on Wednesday night.

Boston scored six runs in the first four innings and then had four more in the fifth to post its third straight game with at least 10 runs. Dustin Pedroia added a home run and the Red Sox finished with a season-high 17 hits.

For the series, Bradley finished 8 for 14 with three homers and 13 RBIs. The Red Sox outscored the Athletics, 40-15.

Oakland has lost a season-high five straight.

Rick Porcello (6-1) got the win, and has now pitched six or more innings in 15 straight starts — extending the longest active streak in the majors.

Eric Surkamp (0-3) took the loss after giving up four runs in just 2 innings.

Bradley also had six RBI in the series opener on Monday.

The Athletics have now allowed 11 or more runs in each of their last four games, the longest such streak in franchise history.

Boston has thrived early in games this season and entered Wednesday having outscored its opponents 38-11 in the first inning. This time it took an inning before its bats came to life.

Bradley started it off with his first home run off the roof of Red Sox’s bullpen that put Boston in front 3-1.

It was his second home run of the series and fifth during his streak.

Oakland tied it in the third inning with Khris Davis’s two-run single. Boston then came right back in its half of the inning to retake the lead for good on Chris Young’s RBI double off Fenway’s Green Monster.

Trainer’s Room

Red Sox: Manager John Farrell said the window for the return RHP Joe Kelly (right shoulder impingement) and LHP Eduardo Rodriguez (right knee) from the disabled list could be somewhat tricky because of a few oddly placed off days for Boston on May 19 and 23. Kelly pitched a rehab start for Triple-A Pawtucket Wednesday and Rodriguez next one is set for Friday. “We’ve got a lot of flexibility coming up,” Farrell said.

Up Next

Athletics: Oakland is off today before heading to Tampa Friday to begin a three-game series against the Rays. LHP Rich Hill (4-3, 2.39 ERA) went 5 innings in his last start May 7 at Baltimore, striking out five and giving just two hits.

Red Sox: LHP David Price (4-1, 6.75) will be on the mound as Boston’s opens a four-game series against the Astros tonight.

Price is 3-2 in six starts against Houston, with a 2.89 ERA and 49 strikeouts.