Sadaharu Oh, also known as Wang Chen-chih, is a Japanese-born Taiwanese former professional baseball player and manager who is currently the chairman of the Fukuoka SoftBank Hawks of Nippon Professional Baseball (NPB). Oh's playing career spanned across four decades, during which he only played with the Yomiuri Giants. He holds the world career home run record at 868, over 100 more than MLB record holder Barry Bonds.

The Yomiuri Giants are a Japanese professional baseball team competing in Nippon Professional Baseball's Central League. Based in Bunkyo, Tokyo, they are one of two professional baseball teams based in Tokyo, the other being the Tokyo Yakult Swallows. They have played their home games in the Tokyo Dome since its opening in 1988. The team's owner is Yomiuri Shimbun Holdings, Japan's largest media conglomerate which also owns two newspapers and the Nippon Television Network.