YES is a regional sports network, and is only authorized to carry its flagship programming, New York Yankees baseball and Brooklyn Nets baseball, in certain territories. These territories do not include the state of Massachusetts, which belongs to the Boston Red Sox and Boston Celtics.
Even if the network were carried, all Yankees and Nets programming would be blacked out.
In order to receive this programming through Comcast or any other provider in the Boston area, you will need to subscribe to MLB Extra Innings or NBA League Pass. Note that telecasts against the Red Sox and Celtics would be blacked out, requiring you to watch those with the Boston announcers on NESN and Comcast SportsNet New England, respectively.
... View more