sentences:  They won the 2006, 2007, 2008, 2010 ,2012 and 2018 season titles by beating other teams in the Island League playoff.Current Nippon Professional Baseball (NPB) Infielder Masayoshi Miwa played for the Olive Guyners from 2005–2007 before jointing the Tokyo Yakult Swallows.Utility player Jobu Morita played for the Olive Guyners from 2006–2008 before being selected by NPB's Tohoku Rakuten Golden Eagles in the 2008 developmental draft.