The English Niconico site have set up an English viewing room for the next Marchao Master League session at 7pm JST on Thursday. I think it’s just a place for westerners to comment and there won’t be anything special like English commentary but if it does well I’m sure there will be more mahjong stuff for us.
niconico blog url: http://blog.nicovideo.jp/en_info/2013/04/post-039053.html
niconico stream url: http://live.nicovideo.jp/watch/lv131262553
By the way, they have translated “日本プロ麻雀協会” (Japanese Professional Mahjong Association) and “最高位戦日本プロ麻雀協会” (Saikouisen Nihon Pro Mahjong Association) to just “Japan Professional Mahjong League”. They’re different organizations and not connected to Renmei/Japan Pro Mahjong League.