He singled and scored when the Padres jumped out to a lead in the third. He later squeezed in the go-ahead run, with a perfect squeeze bunt in the seventh.
"That was great execution on his part," said manager Andy Green. "That's not the easiest thing in the world to do -- bunt a curveball that's down. He got a great bunt down there."
But Amarista's most important contribution may have been a subconscious act during a controversial ruling in the sixth. Third-base umpire Will Little had called the infield fly rule on a Darin Ruf popup into shallow left field.