I didn't realize this until fairly recently, but apparently a channel named BS11 in Japan broadcasts a number of NPB games in English. And if not for a message from Bill Bickard, the guy that's doing that actual broadcasts, I never would have known.
I'm not sure how many people are familiar with the channel BS11 (not to be mistaken with NHK BS-2), but it's a free channel that's available for anyone to view, provided they have BS digital service. According to the FAQ on the BS11 site, it appears that the channel is also available via cable service (call your cable provider).
Sadly, I don't have access to this channel.
In any case, here is the remaining English broadcast schedule:
September 8 - Nippon Ham Fighters at Seibu Lions
September 9 - Nippon Ham Fighters at Seibu Lions
September 21 - Orix Buffaloes at Rakuten Eagles
I'll be directing Bill's attention to this blog post so if you have anything you'd like to say to him about the broadcasts, feel free to drop a comment down below.
Incidentally, Bill also did the voice of Fukui-san from Iron Chef.