With all of the layoffs ESPN has done recently, especially laying off TV talent, I don't think anyone will flip a station to ESPN Radio. The cuts make me wonder if radio network has a lot of life left.
A few other reasons -
WFAN has a significant signal in the southern part of the state.
WTIC tried sports talk in PM drive, and went back to issue-oriented talk.
If someone wants ESPN Radio, they can listen on SiriusXM 80.