Yankees starter Masahiro Tanaka had a perfect game going, retiring the first 10 hitters in order as New York took a 2-0 lead. Then Kiermaier stepped to the plate with one out in the fourth.
"He retired the first 10 batters, a great job," Kiermaier said. "But I wanted to try and lay one down there and put the pressure on the defense and it ended up working out for us that inning."
Tanaka threw an 82-mph slider on the first pitch and Kiermaier dropped a bunt down the third-base line, racing to first to reach with a single.