"Executives told me the show was over because they were going exclusively to call-ins rather than chats with the game's most knowledgeable observers."

Now I know why I can't get an answer out of the Sirius/XM people, they are going to turn Peter Kessler's hour over to the listeners.

Kessler writes in an SI Golf Plus My Shot:

I did about 1,300 live shows on Golf Channel and 1,700 on Sirius XM. It took about 13 seconds to make friends with being on television and about 1,300 shows to figure out radio. Maybe that's why they canceled the radio show. (Wait, guys, I just figured it out!) Executives told me the show was over because they were going exclusively to call-ins rather than chats with the game's most knowledgeable observers.