By Jeremy Kahn

SAN FRANCISCO-If Madison Bumgarner continues it up at the plate, opposing managers may start walking the pitcher intentionally.

Bumgarner hit his fourth home run of the season in the bottom of the bottom of the seventh inning, as the San Francisco Giants defeated the Washington Nationals 5-0 before a crowd of 41,904, the 386th consecutive sellout at AT&T Park.

Asides from hitting his fourth home run of the season, giving him 10 in his career, Bumgarner also threw his second consecutive complete game and the Giants ended the homestand with a 5-1 record.

Bumgarner allowed only three hits, walking just one and a struck out career-high tying 14 on the afternoon.

The win also gave the Giants their first four-game sweep over the Nationals franchise in San Francisco since May 28-30, 1971, when the team was known as the Montreal Expos. The last time that the Giants swept the Expos/Nationals franchise came in the first season of Nationals Park from June 6-9, 2008.

This was the eighth series sweep of the season, and have won 13 out of their last 15 at AT&T Park.

Hunter Pence hit a two-run home run off of Nationals starter Joe Ross, who went to Bishop O’Dowd High School in Oakland.

The fourth inning was the decisive inning for the Giants, as they score three of their five guns in the frame. Brandon Belt got the scoring going, as he doubled in Gregor Blanco, who picked up the first hit of the game for either side with a single. Blanco alertly tagged up on a Matt Duffy flyout to centerfield, and made it into second base safely. Belt then doubled in Blanco, and then Belt scored just in front of Pence, who clubbed his ninth home run of the season.

Bumgarner drove in his first run of the game with a double down the left field line that scored Kelby Tomlinson, who beat out an infield single.

Ross lasted just four innings, allowing four runs on six hits, walking one and striking out six in his first-ever appearance at AT&T Park.

Bumgarner struck out the side on two different occasions, in the first and the eighth innings respectively.

The 26-year old struck out Nationals leadoff hitter Michael A.Taylor in all four at-bats, and struck out Nationals slugger Bryce Harper, the only left-handed to hit a home run off of Bumgarner during the 2015 season on three different occasions.