Originally written on FatManWriting  |  Last updated 3/29/15

August 20, 2013; San Francisco, CA, USA; San Francisco Giants catcher Buster Posey (28) hits a sacrifice fly to score second baseman Marco Scutaro (19, not pictured) against the Boston Red Sox during the eighth inning at AT&T Park. Mandatory Credit: Kyle Terada-USA TODAY Sports
When Buster Posey hit his 419-foot grand slam in the fifth inning Sunday against the Arizona Diamonbacks it was welcomed but not a shocker. The young catcher has been know to have a bit of power over the years. However, what was surprising was the guy that hit another grand slam for the Giants in the following inning.Pitcher Madison Bumgarner.via Cut4Bumgarner's 387-foot grand slam gave his team an 8-1 lead (they eventually won 8-4), but it was so much more than your average 387-foot blast. This one was a record setter.Madison Bumgarner is the first pitcher to have 2 grand slams in the same season since Tony Cloninger in 1966. #SFGiants— San Francisco Giants (@SFGiants) July 13, 2014But that's not all:.@BusterPosey and Madison Bumgarner are the first battery in MLB history to both hit grand slams in a single game. #SFGiants— #SFGStats (@SFG_Stats) July 13, 2014Bumgarner is missing out on the Home Run Derby because National League team captain Troy Tulowitzki claimed he never saw the...
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