I have Verizon FIOS. The MLB Extra Innings package provides about 80 out of town games per week for $179 for the season. However, no more than 10 of the 80 are in HD, about 12%. I'm sure that the originating broadcasts are in HD. Why doesn't Verizon carry them in HD? It's my understanding is that Cablevision has the same limitations but that DirectTV does not.
It would be easy to blame this on the pathetic MLB commissioner Bud Selig but the NBA League Pass has the same problem. NFL Red Zone does not; everything is in HD; don't know about the NFL Sunday package.