Yokohama Stadium is a stadium in Naka Ward, Yokohama, Japan. It opened in 1978 and holds 30,000 people. It is primarily used for baseball and is the home field of the Yokohama DeNA BayStars. The stadium is unique, because it features dirt around the bases and pitcher's mound, but with dirt colored turf infield and base paths. The entire green portion of the field is now turf.