The Tokyo Yakult Swallows are a Japanese professional baseball team competing in Nippon Professional Baseball's Central League. Based in Shinjuku, Tokyo, they are one of two professional baseball teams in Tokyo, the other being the Yomiuri Giants. They have won nine Central League championships and six Japan Series championships. Since 1964, they have played their home games at Meiji Jingu Stadium.

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.