Dwango and Niwango announced today that Nico Nicho Nama Hoso will stream every home game for the Yokohama Bay Stars, Rakuten Eagles, Softbank Hawks, and Orix Buffaloes (288 games in all). The streams will be available for free, from start to end.
Source: Sponichi 2/19/2014
Note: There are usually a limited number of free view slots available for popular streams. Premium memberships, that come with priority view slots, are available at 525 yen a month.