The Yomiuri Giants at home Hero Award for May went to Hayato Sakamoto (determined by fan balloting).
May 15, vs Yakult: with a runner on first and no out in the 7th inning of a scoreless game, Sakamoto blasted a home run to left-center off Yasuhiro Ogawa. It was his sixteenth game after moving to the four hole in the line-up. The Giants went on to win the game, 2-1. [official announcement - box score]