Bochy explained that asking Perez to try a third bunt would have been futile.
"It looked like he was having a hard time getting the bat out front," Bochy said.
Citing Perez's above-average speed, Bochy believed that Perez probably wouldn't ground into a double play. Hence the removal of the bunt sign.
"I just felt our chances [were] better letting this kid swing," Bochy said.
Chris Haft is a reporter for MLB.com. Read his blog, Haft-Baked Ideas, and follow him on Twitter at @sfgiantsbeat. This story was not subject to the approval of Major League Baseball or its clubs.