Braves manager Fredi Gonzalez is shaking up his lineup with Atlanta mired in a six-game losing streak and struggling offensively.Atlanta Braves' Alex Wood bunts against the San Francisco Giants and advances to first base on a throwing error during the third inning of a baseball game on Sunday, May 4, 2014, in Atlanta.Atlanta Braves' Justin Upton reacts after he strikes out against the San Francisco Giants with a runner in scoring position during the sixth inning of a baseball game Sunday, May 4, 2014, in Atlanta.