Giants' Madison Bumgarner Becomes 2nd Pitcher with 2 Grand Slams in a Season

Bleacher Report MilestonesB/R StaffJuly 15, 2014

SAN FRANCISCO, CA - JULY 13:  Madison Bumgarner #40 of the San Francisco Giants hits a grand slam home run off of Matt Stites (not pictured) of the Arizona Diamondbacks during the sixth inning at AT&T Park on July 13, 2014 in San Francisco, California.  (Photo by Jason O. Watson/Getty Images)
Jason O. Watson/Getty Images

San Francisco Giants pitcher Madison Bumgarner earned a piece of history Sunday, becoming just the second pitcher in MLB history to hit two grand slams in a season, per ESPN Stats & Info.

Long known as one of the more respectable batters among major league hurlers, the 24-year-old Bumgarner went deep off of Arizona Diamondbacks reliever Matt Stites in the sixth inning of Sunday's eventual 8-4 Giants win.

The home run, which was Bumgarner's third of the season and fifth of his career, pushed his season-long slash line to an impressive .275/.302/.550. He previously hit a grand slam on April 11 against the Colorado Rockies and now has 12 RBI through just 40 at-bats this season.

Previously, the only pitcher to hit multiple grand slams in a season was Tony Cloninger, who smacked two for the Braves in their first season in Atlanta, back in 1966. Though his career wasn't remarkable from either a pitching or hitting perspective, Cloninger walloped five of his 11 career home runs during that 1966 campaign, one year after posting a 24-win season.

Bumgarner earned a second slice of baseball history Sunday, as he and star Giants catcher Buster Posey became the first starting pitcher-starting catcher duo to both hit grand slams in the same game, per MLB Stat of the Day.

Posey's third-inning slam accounted for San Francisco's other four runs, as the batterymates knocked in all eight of their team's runs.

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