The 2011 Nippon Professional Baseball season is the 62nd season since the NPB was reorganized in 1950. The season was delayed by the Tohoku earthquake. The Tohoku Rakuten Golden Eagles, based in northern Japan, and coached by Senichi Hoshino, were particularly affected by the quake, as the Miyagi Baseball Stadium was badly damaged. [1] At the season's end, the Yokohama BayStars was renamed as Yokohama DeNA BayStars as the owner changes.