The Boston sports radio market is undergoing some serious change. Namely, the upstarts from 98.5 Sports Hub are killing WEEI’s The Big Show, the long-time drive-time leader.

Felger and Massarotti, the FM station’s signature show, saw its share in the 25-54 year old male category – so the dudes who listen to sports radio – jump 24 percent from September to October while its competitor stayed static.

George Cain, a guest contributor on Boston Sports Media Watch, offers four reasons why he believe this happened.

One item specifically caught our eye. Read more